Aeroflex GPSG-1000 Operation Manual
Aeroflex GPSG-1000 Operation Manual

Aeroflex GPSG-1000 Operation Manual

Gps/galileo positional simulator
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GPSG-1000
GPS/Galileo
Positional Simulator
Operation Manual
EXPORT CONTROL WARNING: This document contains controlled
technical data under the jurisdiction of the Export Administration Regulations (EAR), 15 CFR
730-774. It cannot be transferred to any foreign third party without the specific prior approval of the
U.S. Department of Commerce Bureau of Industry and Security (BIS). Violations of these
regulations are punishable by fine, imprisonment, or both.

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  • Page 1 GPSG-1000 GPS/Galileo Positional Simulator Operation Manual EXPORT CONTROL WARNING: This document contains controlled technical data under the jurisdiction of the Export Administration Regulations (EAR), 15 CFR 730-774. It cannot be transferred to any foreign third party without the specific prior approval of the U.S.
  • Page 2 G P S G - 1 0 0 0 G P S / G a l i l e o P o s it i o n a l S i m u l a t o r O p e r a ti o n M a n u a l P UB LIS HE D BY Aer ofle x CO P YR IG HT ©...
  • Page 3 S ub j e c t t o E x p o rt Co n t rol , s e e C ov e r P a g e f o r d e t a i l s .
  • Page 4 ELE C TRO M A GN ET IC CO M P ATI BI LITY Dou ble shi elded and pr oper ly t erminat ed ext erna l int e rf ace cable s must be used wi th t his equ ipment whe n int erf acing w ith the RS -23 2 and Et herne t.
  • Page 5 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 6 D e c l a r a t i o n of C o n fo r m i ty The Decla rat ion of C onfor mity C er tifica te in cluded wit h th e U nit sh ould r emain wit h th e Un it.
  • Page 7 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 8 P r e c a u ti o n s S AF E T Y F I R S T - T O A L L O P E R A T I O NS P E R S O NN E L G EN ER AL CO N DI TIO N S O F US E This produ ct is designed and tested to comply w ith the requ irement s of IE C/E N6 1010- 1 ‘S afet y requ iremen ts fo r el ectri c al equ ipm ent for measur ement, contr ol a nd lab orat ory use’...
  • Page 9 S AF E T Y F I R S T - T O A L L O P E RA T I O NS P E R S O NN E L (c o n t) EQ U IPM E NT G RO U ND IN G PR OT EC TIO N Impr oper grou nding of e quipment can result in electr ical sho c k.
  • Page 10 S AF E T Y F I R S T - T O A L L O P E RA T I O NS P E R S O NN E L (c o n t) TO XI C H A ZAR D S S O M E O F T HE CO M P ON EN TS US ED IN TH IS EQ U IPM E NT M AY IN CL UD E R ES IN S W AR NING A N D OT HE R M A TE RI ALS WH IC H G IVE O FF TO XI C F UM E S I F I NC IN ER AT ED .
  • Page 11 S AF E T Y F I R S T - T O A L L O P E RA T I O NS P E R S O NN E L (c o n t) FIR E HA ZA RD MA K E S UR E TH AT ON LY FU SE S OF TH E CO RR E CT RA TIN G A ND TY PE A RE W AR NING U S ED FO R RE PL AC EM EN T.
  • Page 12 P r e f a c e SC O PE This Ma nual co ntains instr uction s for oper ati ng th e G PS G -1000 . I t i s str ongly recommen ded t hat the O pe rato r be come th oroug hly fa mi liar wit h t his manua l bef ore att empting to opera te t he eq uipment .
  • Page 13 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 14 S e r v i c e U p o n R e c e i p t o f M a t e r i a l U N P A C K I N G T E S T S E T Spe ci al desi gn packin g mate rial inside this shipping conta iner provid e maximum pro tectio n for t he Te st S et.
  • Page 15 C H E C K I N G U N P A C K E D E Q U I P M E N T Inspect equ ipment for possible damage incur red duri ng shipme nt. If Test Set has been damaged , r eport th e damag e to Aer ofle x Cu st omer Ser v ice.
  • Page 16 S t a n d a r d It e m s IT EM PA R T N UM B ER Q TY GPS/Galileo Positional Simulator 87339 Power Supply 67374 Power Cord (U.S.) 62302 Power Cord (European) 64020 Operation Manual (CD) 88037 Getting Started Manual (paper) 88038...
  • Page 17 S t a n d a r d It e m s ( c o n t ) IT EM PA R T N UM B ER Q TY Coax Cable (50ft) 90114 GPSG Antenna Coupler 87636 Shot Bag 88753 RX Antenna 90113 S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 18 O p t i o n a l I te m s IT EM PA R T N UM B ER Q TY Battery Pack 86196 External Battery Charger 87040 90106 Antenna Coupler Placement Pole Kit (Pole and D Ring) Kit, CPLR Dual GPS 91136 Antenna System...
  • Page 19 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . x v i...
  • Page 20: Table Of Contents

    T ab l e of C o nt e nt s C h a p t e r 1 - D e s c r i p t i o n ......1 - 1 Int roduct ion .
  • Page 21 C h a p te r 3 - T e s t S e t F u n c t i o n s ....3 - 1 Int roduct ion .
  • Page 22 C h a p t e r 5 - M a i n t e n a n c e ......5 - 1 Int roduct ion .
  • Page 23 A p pe n d i x A P i n - O u t T a b l e s ....... A - 1 A p pe n d i x B T e r m i n o l o g y .
  • Page 24 Li s t o f F i gu res The Aer oflex GP SG - 1000 ..........1 - 1 G PSG - 1000 Scre en C over/ St and .
  • Page 25 Kml Window ........... . 3 - 36 Waypoin t Wi ndow .
  • Page 26 Tri angulat ion using t hree know n poi nts in 3D space ......6 - 16 M ultip ath D elays .
  • Page 27 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 28 Li st of T ab le s Basic NM E A- 183 S ente nces ......... . 4 - 9 Typical Re ce iver C/N 0 as a F unction of RF Level .
  • Page 29 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 30: Chapter 1 - D E S C R I P T I O N

    C h a pt e r 1 - D e s c r i p t i o n 1 . 1 I N T R O D U C T I O N F ig. 1-1 The Aer ofle x G PS G- 1000 1 .1 .1 S c o p e Type of Manual: O per ation Manual...
  • Page 31: Ca Pabilit Ies

    Desc ri pti on 1 .2 .1 C a p a b i l it i e s T he G PS G -1000 pr ovides use rs w ith the follo wing stand ard capabilit ies: • Sel ectable single carr ier •...
  • Page 32: Feat Ures

    Desc ri pti on 1 .2 .2 F e a t u r e s • S ystem S c reen • SV Se lection Tabl e displ ays SV G eomet ry f or R A IM te st ing •...
  • Page 33 Desc ri pti on T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . 1 - 4...
  • Page 34: Chapter 2 - T E S T S E T O P E R A Ti O N

    C h a p t e r 2 - T e s t S e t O p e r a ti o n 2 . 1 I N T R O D U C T I O N This chapter r efer s to local opera tion of a G PS G- 1000 configu red wit h fa ctory defa ult sett ings unless spe c ified o ther wise.
  • Page 35: Bat Ter Y Re Chargi Ng U S Ing B Att Ery Cr Adle

    O per at ion 2 .2 .3 B a t te ry R e c h a rg i n g U s i n g G P S G - 1 0 0 0 S T E P PR OC EDU RE C onnect A C L ine C able to AC PW R C onne ctor on t he A C Adap tor and an appr opri ate A C pow er source .
  • Page 36: Inst Allati On

    O per at ion 2. 3 I N ST A L L A T I O N 2 .3 .1 V e n t il a t io n R e q u ir e m e n t s The GP SG - 1000 i s convecti on cool ed via the enclosur e case.
  • Page 37: Con Tro Ls And Con Nector S

    O per at ion 2 . 4 CO N T R O L S A N D C O N N E C T O R S 2 .4 .1 Front Panel Controls Fi g. 2- 2 Fro nt P anel Con trol s C on tr ol D escr ipt ion Po wer O N /O FF...
  • Page 38 O per at ion C on tr ol D escr ipt ion Battery LED B at ter y V olt age Low ( red) T he un it t urns off wit hin o ne minu te w itho ut ch arger B at ter y P re- Ch ar ge ( flashin g yello w) T rickle charg e dur ing e x tremel y low volt age on the batt ery.
  • Page 39: Re Ar P Anel Con Tro Ls And Con Nector S

    O per at ion 2 .4 .2 R e a r P a n e l C o n tr o l s a n d C o n n e c t o r s Fig. 2-3 Test S et R ear Pa nel C ontr ols a nd C onnect ors Co nnect or D escr ipt ion US B Hos t 1...
  • Page 40: O Perat Ing P Ro Ce Dures

    O per at ion 2. 5 O PE RAT I NG PR OC EDU RES 2 .5 .1 P o w e r O N T e s t S e t Af ter complet ing I nitial Inst allati on, perf orm t he f ollow ing st eps t o Tur n O n the Test Set: S T E P PR OC EDU RE Pr ess O n/O ff Bu tton on F ront P anel t o po wer on Test Set .
  • Page 41: Us Er I Nter Face C Ompone Nts

    O per at ion 2 . 6 US E R I N T E R F A C E C O M P O N E N T S The Test Set Us e r I nter face (U I) is a touch scr een contr ol pa nel t hat provide s a f lexible wo rking enviro nment for all u s ers.
  • Page 42: Launch Bar N Avigat Ion

    O per at ion 2 .6 .2 L a u n c h B a r N a v i g a t io n The ar row s on t he top and bott om o f the Launch B ar are used to scr oll the Funct ion Icons Up and down .
  • Page 43: Funct Ion W Indow Icon S

    O per at ion 2 .6 .5 F u n c t io n W i n d o w Ic o n s Funct ion W indow s use the f ollow ing icons t o indi cate va rious funct ions or sta tes: I CO N D ES CR IP TIO N C loses the Functio n Win dow whi le lea v ing t he fu nction in the...
  • Page 44: Def Ining Par Am Ete Rs

    O per at ion 2 . 7 DE F IN IN G P A R A M E T E R S 2 .7 .1 E n t e r in g N u m e r i c V a l u e s Nu me ric val ues ar e used to defin e a va riet y of test para me ter s such as fre quency a nd level.
  • Page 45: Da Ta S Lew Ba R

    O per at ion 2 .7 .3 D a t a S le w B a r The Dat a S lew Bar incr ementa lly select s specif ic dat a value s by spi nning the w heel . Sel ecting x10 increase s the step incremen t by a fa ctor of 10.
  • Page 46: Locked Fields

    O per at ion 2 .7 .6 L o c k e d F i e ld s A small padlock symbol ma y be displa yed a gainst cer tain fiel ds ind icating th at the fiel d is locked and may not be edi ted o r a cce sse d.
  • Page 47 O per at ion T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . 2 - 14...
  • Page 48: Ch A P Te R 3 - T E S T S E T F U N C T I O N S

    Ch a p te r 3 - T e s t S e t F u n c t i o n s 3 . 1 I N T R O D U C T I O N This chapter pr ovides an ope rat ional descript ion o f st andar d simulat or functi ons. 3.
  • Page 49 T esti ng F ig. 3-1 Si mu lation Funct ion W indow ( GP S Stat ic) Fig. 3- 2 S imulat ion F unctio n Wind ow (G alile o St atic) Fig. 3- 3 S imulat ion F unction Windo w (SB AS S tatic) S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 50 T esti ng Control Component Description I ncremen tal D ata En try: Lat itude enter ed in decimal for m at Latitude E x ample: 37 3 9.0000 N (37 degre es, 39 .0000 minute s No rth) S ign: N or S N O TE: Th is fie ld is locked w hen SIMU LA TIO N = D YN AMI C or T RA J EC TO RY .
  • Page 51 T esti ng Display Component Description D isplays speed i n MPH or K m /h w hen runn ing a dynamic o r Speed t raje ct ory simulatio n, d ependen t on Spe ed set ting on t he R out e Ed it p age.
  • Page 52: Setup Simulation Window

    T esti ng 3 .2 .2 Setup Simulation Window The Set up S imulati on Win dow is used to configu re the t est se t op erat ional parame ters. Fig. 3-4 S etup Simula tion Window Control Component Description GN S S D ro p D own Sele c tions :...
  • Page 53 T esti ng Control Component Description SB AS D ro p D own Sele c tions : A UT O - Auto ma tic op timized selectio n of SB AS satel lite ( WAA S/ EG N OS ) a ccordin g to simulate d posit ion. O FF - SB AS satel lites are tur ned O FF .
  • Page 54 T esti ng Control Component Description P osi tio n S our ce D ro p D own Sele c tions : U s er - Us er ent ered positi on. G P S - O n b oard GP S recei ve r d erived positi on. C lock D ro p dow n sel ections: G P SR X - simulati on uses unco rre cted G PS U TC t ime and date...
  • Page 55 T esti ng Control Component Description Mo tio n M od el D ro p D own Sele c tions : P edest rian A utomob ile Mar ine L ow Per forma nce A ircra ft H igh Per for mance A ircr aft C us tom U nlimit ed T he velo city an d acceler ati on limit s used duri ng dyna mi c...
  • Page 56 T esti ng 3 .2 .2 . A F a d i n g a n d M u l ti p a t h M o d e l I m p le m e n t a ti o n The GP SG - 1000 f irmw are implement s inde pendent mult ipath models for each sa tellit e channel .
  • Page 57 T esti ng The multipa th en vironmen ts cur rent ly imple me nted in t he G PS G -100 0 ar e show n in the foll owin g tab le: M ULT IPA TH DE SC RI PTI ON M OD E L N one No Fadi ng or mult ipath eff ects ar e simula ted.
  • Page 58 T esti ng The GP SG - 1000 so ftw are include s pre -def ined co nfigur ati ons fo r sever al repr esenta tive multip ath e nviron me nts sel ectable in t he S imulat ion W indow ’s Fad ing f ield. These envir onments are: •...
  • Page 59: Setup Motion Window

    T esti ng 3 .2 .3 Setup Motion Window The Set up Mot ion Wi ndow is use d to select the motion model limits t o be used in a dynamic si mu lation . Fig . 3- 5 Set up Mot ion Wi ndow Control Component Description Cu rr ent Mo tio n Mod el D ro p dow n sel ections:...
  • Page 60: Setup Channels Window

    T esti ng 3 .2 .4 Setup Channels Window The Set up C hannel s Windo w is used to co nfigur e t he t otal SV ’s availa ble in a simul ation and in a dual mo de simulat ion to al locate the number of SV ’s used for G PS , G alil eo and SB AS .
  • Page 61: Setup I/O Window

    T esti ng 3 .2 .5 Setup I/O Window The S etu p I/O Wi ndow is used t o confi gure the t est set Loss and I nput /O utput oper ation al par ameter s. Fig. 3- 7 S etup I/O Window Control Component Description Cou pler L oss...
  • Page 62: Sv Prn Selection Function Window

    T esti ng 3 .2 .6 SV PRN Selection Function Window The SV PR N Sel ection Funct ion Wi ndow allow s t he user t o select specif ic G PS /G alileo SV ’s fo r e diting . T he avai lable SV ’s, a cco rding to the curr entl y loade d alman ac and UT C, are displaye d in tw o tab les.
  • Page 63: Sv Pr N Ed It W Indow

    T esti ng 3 .2 .7 S V P R N E d it W i n d o w The SV PR N Edi t Wi ndow opens whe n an SV line is select ed in eit her the GP S or G A L tabl es, di sp layed i n th e SV P RN S electio n Fun c tion Window .
  • Page 64 T esti ng Control Component Description G AL Int egr it y A llow s sele ct ion of CO NN E CTE D or DI SC O NN EC TED ( C arr ied in G alileo Na v Da ta). O nly d isplayed in G alile o S V’s. N O TE: N ot displayed for G PS SV ’s Can cel C ancel para m eter change , r evert s to previo us sett ing...
  • Page 65: Ro Ute F Unctio N Wind Ow

    T esti ng 3 .2 .8 R o u t e F u n c t io n W in d o w The Rou te F unction Windo w is used to o rgani ze and config ure the waypoi nts use d in a dynamic si mu lation .
  • Page 66 T esti ng Control Component Description Mo ve U p Moves the highlig hted wayp oint up in the list of w aypoin ts. Move Do wn Moves the highlig hted wayp oint down in t he l ist of w aypoint s. S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 67: Route Edit Stored Window

    T esti ng 3.2.9 Route Edit Stored Window The Rou te E dit Sto red Window is used t o disp lay all stor ed w aypoint s. Fig. 3- 11 Rout e E dit Stor ed Window Control Component Description S or ted By D ro p dow n sel ections: C ode, Name, C ity, Coun try, Lat itude,...
  • Page 68: Route Edit Edit Window

    T esti ng 3.2.10 Route Edit Edit Window The Rou te E dit Edit Win dow is used to configu re i ndividua l w aypoint s, inclu ding t he Alt itude Ra te, Spee d, A cceler ation and Turn Ra dius use d dur ing d y namic simulat ions. Fi g.
  • Page 69 T esti ng Control Component Description Can cel C loses the Rout e E dit Edit Wind ow and r etur ns t o the Ro ute W indow . D one C loses the Rout e E dit Edit Wind ow and r etur ns t o the Ro ute W indow .
  • Page 70: Waypoint Function Window

    T esti ng 3 .2 .1 1 Waypoint Function Window The Waypoin t Fu nction Window is used t o conf igur e th e w aypoint s that compr ise a 3D Na vi gation simulat ion. F ig. 3 -13 Waypo int Functio n Win dow Control Component Description S or ted By...
  • Page 71 T esti ng Display Component Description D isplays Waypoin t C ode. Code Displays Waypoin t Name. Name Displays Waypoin t City. City D isplays Waypoin t C ountr y . Country D isplays Waypoin t Lat itude in decimal f ormat . E x ample: Latitude 39.
  • Page 72: Waypoint Edit Stored Window

    T esti ng 3 .2 .1 2 Waypoint Edit Stored Window The Waypoin t E dit Stor ed W indow is used t o displ ay the Cu rre nt S tor ed W aypoint s. Waypoi nts can be sel ected fro m a t able, to be edi ted o n th e Waypo int Edit Edi t Wi ndow . F ig.
  • Page 73: Waypoint Edit Edit Window

    T esti ng 3 .2 .1 3 Waypoint Edit Edit Window The Waypoint Ed it E dit W indow is use d to make change s to a selecte d w aypoint or creat e a ne w w aypoi nt. Waypoint s may b e select ed f rom a tabl e on the Waypoint Win dow or Waypoi nt E dit Sto red Window .
  • Page 74: G Ps Rx Fu Nction Window

    T esti ng 3 .2 .1 4 G P S R X F u n c ti o n W i n d o w The Inte rnal G PS Rece iver ma y be u s ed to obt ain a curr ent Almana c, loca tion and U TC for use in simula tions.
  • Page 75 T esti ng Display Component Description C ur r ent Dat a/T ime D isplays the curr ent d ate and U TC time rece ived by the in ter nal G P S R eceiver . Posi ti on F ix I ndicat es N o Po sition Fix, 2D Solu tion or 3D Solut ion La tit ude W aypoint Lati tude in de ci mal fo rmat.
  • Page 76: Mainte Nance F Unction Wind Ow

    T esti ng 3 .2 .1 5 M a i n t e n a n c e F u n c t io n W i n d o w Sel ecting the Ma inten ance icon fr om the Laun ch Ba r Menu wi ll disp lay th e Maint enance sub-me nu.
  • Page 77: Calibration Function Window

    T esti ng 3 .2 .1 6 Calibration Function Window Sel ecting Cal ibrat ion f rom the Ma intena nce sub- menu w ill display the Calib rat ion Passw ord En try Window . The C alib rati on Fu nction Window is passw ord prot ected. Co ntact Aer oflex for the def ault passwor d.
  • Page 78: Diagnostics Function Window

    T esti ng 3 .2 .1 7 Diagnostics Function Window Sel ecting Dia gnostics from the Ma inten ance sub- menu will display the Diag nostics Funct ion W indow . S ee C hapt er 5 - Mainte nance f or detai ls. Fig.
  • Page 79: File Alman Acs Funct Ion W Indow

    T esti ng 3 .2 .1 8 F i le A l m a n a c s F u n c ti o n W i n d o w The File Almana cs Funct ion W indow is u se d to manage the Almana c file s stor ed in the G PSG - 1000 and t o manag e th e Al ma nac fi le used dur ing t he simul ation.
  • Page 80: File Rou Tes F Unction Wind Ow

    T esti ng 3 .2 .1 9 F i le R o u t e s F u n c t io n W in d o w The File Rou tes F unction Windo w i s used to man age t he R oute file s stor ed in the G PSG - 1000 and t o mana ge th e R oute file used d uring a d yn amic simulat ion.
  • Page 81: File Set Tings Funct Ion Wi Ndow

    T esti ng 3 .2 .2 0 F i le S e t ti n g s F u n c t i o n W i n d o w The File Set tings Functi on Win dow is used to manage the Sett ings f iles st ored in t he G PSG - 1000 and t o manag e th e C urr ent Sett ings F ile.
  • Page 82: File Tra Jector Y Fun C Tion Window

    T esti ng 3 .2 .2 1 F i le T r a je c to r y F u n c t io n W in d o w The File Traj ector y Funct ion W indow is u s ed t o manage the tr ajector y fi les sto red in th e G PSG - 1000 and t o loa d the tr ajecto ry f ile used dur ing a tr ajector y mode simulat ion.
  • Page 83: Km L Functi On Win Dow

    T esti ng 3 .2 .2 2 K m l F u n c t i o n W i n d o w The Kml F unctio n Wind ow is used to ma nage t he K m l f iles sto red in t he G PS G -1000 and to ma nage the K m l f ile use d dur ing a tr ajector y simula tion.
  • Page 84 T esti ng D isp lay Co mpone nt D escr ipt ion Cu rr ent S ett ings Fil e D isplays the file name of th e Kml file curr entl y used t o set up t he un it. Maxi mum V elo city 0 to 1118 Mp h or 0 t o 180 0 K m/ h Con ver sion Samp ling...
  • Page 85: Waypoin T Wi Ndow

    T esti ng 3 .2 .2 3 W a y p o in t W i n d o w The Waypoin t Win dow is used to manage the user enter ed w aypoin ts sto red in the GP SG - 1000. Fig .
  • Page 86: Syste M Funct Ion W Indow

    T esti ng 3 .2 .2 4 S y s t e m F u n c t i o n W i n d o w Sel ecting the System icon f rom t he La unch B ar Menu w ill display the S ystem su b-menu. The System sub-men u cont ains t he O pti ons , S ystem C onf igura tion and S ystem U pdat e icons.
  • Page 87 T esti ng T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . 3 - 40...
  • Page 88: Chapter 4 - T E S T I N G G P S / G A L I L E O R E C E I V E R S

    C h a p t e r 4 - T e s t i n g G P S / G a l i l e o R e c e i v e r s 4 . 1 I N T R O D U C T I O N This chapter pr ovides detail s of standar d t ests f or GP S receiver s.
  • Page 89: Setup Basic Static Simulation

    T esti ng 4 .1 .2 Setup Basic Static Simulation Per for m the foll owin g step s for S etup. S T E P PR OC EDU RE Pr ess P ow er On /O ff Ke y for a mi nimum of one second t o pow er up test set. Sel ect L aunch Ba r tab to di splay lau nch bar .
  • Page 90 T esti ng S T E P PR OC EDU RE S elect I/O tab. Loss : Co upler Loss = Figu re i n dB marke d on Ant enna C oupl er. Co upler Ca ble = Figu re i n dB marke d on RF Coa x Ca ble. Di rect Cab le = Figur e in dB marked on R F Coax Cab le.
  • Page 91: Setup Basic Dynamic Simulation

    T esti ng 4 .1 .3 Setup Basic Dynamic Simulation Per for m the foll owin g step s for S etup: S T E P PR OC EDU RE Pr ess P ow er On /O ff key f or a minimum of on e second to pow er u p te st set . Sel ect L aunch Ba r tab to di splay lau nch bar .
  • Page 92 T esti ng S T E P PR OC EDU RE Sel ect I /O tab . Loss : Co upler Loss = Figu re i n dB marke d on Ant enna C oupl er Co upler Ca ble = Figu re i n dB marke d on RF Coa x Ca ble Di rect Cab le = Figur e in dB marked on R F Coax Cab le Inp ut/ Ou tpu t: Ext Re f O ut = O FF...
  • Page 93: Setup Basic Trajectory Simulation

    T esti ng 4 .1 .4 Setup Basic Trajectory Simulation Per for m the foll owin g step s for S etup: S T E P PR OC EDU RE Pr ess P ow er On /O ff Ke y for a mi nimum of one second t o pow er up test set. Sel ect L aunch Ba r tab to di splay lau nch bar .
  • Page 94 T esti ng S T E P PR OC EDU RE Sel ect I /O tab . Loss : Co upler Loss = Figu re i n dB marke d on Ant enna C oupl er Co upler Ca ble = Figu re i n dB marke d on RF Coa x Ca ble Di rect Cab le = Figur e in dB marked on R F Coax Cab le Inp ut/ Ou tpu t: Ext Re f O ut = O FF...
  • Page 95 T esti ng S T E P PR OC EDU RE NO TE : It is r ecommended th at the r eceiver u nder te st is ‘cold star ted’ and a f resh alman ac obt ained fro m the GP SG - 1000 si mu lation . Th is pr ocess may ta ke sever al minu tes, depende nt o n the specif ic re ce iver.
  • Page 96: G Ps Re Ce Iver Com M Unica Tion

    T esti ng 4 .1 .5 G P S R e c e iv e r C o m m u n ic a t i o n Some re ceivers may have ma intena nce p ages t he user can access to view S V paramet ers and position al in format ion.
  • Page 97 T esti ng 4. 1 .6 .A Signal Tracking Sensitivity Per for m the foll owin g step s for signa l tr acking sensitivit y test . S T E P PR OC EDU RE I f con necting G PSG - 1000 via A nte nna C ouple r, perf orm Ant enna Coup ler Inst allati on pr ocedur e Sect ion 4.
  • Page 98 T esti ng Fig. 4- 3 S imulat ion F unction Wind ow 4. 1 .6 .B Ac q u i si t i o n S e n s i t i v i t y Per for m the foll owin g step s for acqui sition sensitivi ty te st. S T E P PR OC EDU RE If connect ing G P SG -100 0 via Ant enna C oupl er, per form Ant enna C oupl er...
  • Page 99: Measuri Ng Ti Me To Fir S T Fi X (T Tff) And Posi Tion Accur Acy

    T esti ng 4. 1 .6 .C C/ N M e as u r e m e n t O p t io n s In sce nario s wh ere measure me nt spe ed is import ant, such a s a pr oduct ion en vironmen t, you can use a highe r C /N va lue an d extr apola te t he sen s itivity infor m atio n fr om th e res ul t.
  • Page 100 T esti ng For a r eceiver to obta in a positio n fi x, it must down load t he al ma nac and ephe me ris info rmatio n f rom the sate llite th rough a navig a tion message. B ecause it takes 30 seconds for a r eceiver to dow nload an e ntir e G PS fr ame, a “...
  • Page 101 T esti ng Per for m the foll owin g step s for A c quisitio n (co ld sta rt) TT F measur ement . S T E P PR OC EDU RE I f con necting G PSG - 1000 via A nte nna C ouple r, perf orm Ant enna Coup ler Inst allati on pr ocedur e S ection 4.1.
  • Page 102 T esti ng 4. 1 .7 .C Re a cq u i s i t i o n ( h o t st ar t ) The r eceiver has up- to- date almanac and ephem er is info rmatio n, has n ot been tur ned of f for more t han tw o hou rs and h as not move d locatio n more t han 100 m.
  • Page 103 T esti ng Ini ti al U TC C old TTF F ( S) Ho t T TFF (S ) Maxi mum SV C /No S V’s 10:1 4:02m 38.2 1 1.30 6,9 ,12,1 4,2 14:0 6:18 32.0 1 0.52 16, 21 16:1 2:01m 33.0 9...
  • Page 104: Raim Testing And Sv Geometry

    T esti ng 4 .1 .8 RAIM Testing and SV Geometry The orbi tal ch aract eristi cs of SV ’s w ithin a G PS const ellat ion ar e con tained in t he tr ansmitte d alman ac and ephemer is dat a. The G P SG -10 00 doe s not per mi t th e user to dir ectly cha nge in dividual SV or bital par ameter s, t heref ore individ ual S V E levat ion a nd Azimut h, at any U TC w ith in the simulat ion, ar e dete rmined by alman ac a nd the ephe me ris gener ated fr om the almana c.
  • Page 105 T esti ng T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . 4 - 18...
  • Page 106: Chapter 5 - M A I N T E N A N C E

    C h ap te r 5 - M a in te na n c e 5 . 1 I N T R O D U C T I O N 5 .1 .1 V i s u a l I n s p e c t io n s Visua l inspectio ns should be pe rfor med per iodicall y de pending o n opera ting envi ronment , main tenance and use.
  • Page 107: Gpsg-1000 Software Update Procedure

    5 .2 .2 GPSG-1000 Software Update Procedure Per for m the f ollow ing st eps to Upd ate G P SG -100 0 Sof tw are vi a the US B po rt u s ing a U SB memory device* : NO TE : A Ser v ice I nfor m ation Lett er (SI L) is r e leased wit h each new soft war e r elease.
  • Page 108 T esti ng S T E P PR OCE DUR E Inser t t he U SB memor y device in U SB H ost 1 or Ho st 2 Por t. Host 1 Fig . 5- 2 US B P ort s Wait 5 t o 10 seconds for the device t o be reco gnized a nd sele ct Co py f ro m U SB .* * Th e stat us scre en shou ld ind icate ‘Cop ying S oft war e U pdate ’.
  • Page 109: Gpsg-1000 Debug Files

    T esti ng 5 .2 .3 GPSG-1000 Debug Files D ebug Fil es: If t he G P SG -1 000 encount ers a p roble m dur ing the boot pr ocess and is un able to boot up pr operl y , a debug file may be obtai ned f rom t he G P SG -10 00 and sent to Aer oflex to assist in d eter mi ning t he cau s e of the boot issue.
  • Page 110: I Dentif Ying I Nstall Ed S Oftw Ar E V Ersion

    T esti ng 5 .2 .4 I d e n t if y in g I n s t a ll e d S o f t w a r e V e r s io n P erf orm t he f ollow ing st eps t o ide ntify the softw ar e ver s ion in st alled in t he G P SG -10 00. S T E P PR OCE DUR E Pr ess th e Po wer O n bu tton to tur n the test set on.
  • Page 111: Gpsg-1000 Almanac Update

    T esti ng 5 .2 .5 GPSG-1000 Almanac Update Per for m t he fol lowi ng steps to U pdat e GP SG - 1000 Al ma nac using a U SB memor y device * : S T E P...
  • Page 112: Maintenance Function Windows

    T esti ng 5.2.6 Maintenance Function Windows Sel ecting the Ma inten ance icon fr om the Laun ch Ba r Menu wi ll disp lay th e Maint enance sub-me nu. T he Main tenance sub- me nu cont ai ns t he C alib rati on and Di agnosti cs icons. Fi g.
  • Page 113 T esti ng 5. 2 .6 .A Calibration Function Window Sel ecting Cal ibrat ion f rom the Ma intena nce sub- menu w ill display the Calib rat ion Passw ord En try Window . The C alib rati on Fu nction Window is passw ord prot ected. Co ntact Aer oflex for the def ault passwor d.
  • Page 114 T esti ng 5. 2 .6 .B Diagnostics Function Window Sel ecting Dia gnostics from the Ma inten ance sub- menu will display the Diag nostics Funct ion W indow . T he D iagnost ics Fun c tion Window pr ovides contr ol f or g enera ting test signals, w ith sp ecific powe r an d fr equen cy para m eter s.
  • Page 115: System Function Windows

    T esti ng 5.2.7 System Function Windows Sel ecting the System icon f rom t he La unch B ar Menu w ill display the S ystem su b-menu. The System sub-men u cont ains t he O pti ons , S ystem C onf igura tion and S ystem U pdat e icons.
  • Page 116 T esti ng 5. 2 .7 .A Options Function Window S electi ng O pti ons fr om t he S y st em sub- menu w ill display the Opt ions Functio n Win dow. The Op tions Functi on Win dow pro vi des cont rol for inst alling or removing opti ons and displays curr ently install ed opt ions.
  • Page 117 T esti ng 5. 2 .7 .B System Configuration Function Window Sel ecting System Con figur ation fr om th e Syst em sub- menu w ill display the S ystem Co nfigur atio n F unction Win dow. T he S ystem Conf igur ation Fun c tion Windo w displays five selecta ble ta bs across t he to p of t he scre en.
  • Page 118 T esti ng D isp lay Co mpone nt D escr ipt ion Slo t 1 MIC 284 D isplays t he cur rent PX I slot 1 contr oller MIC 284 te mp erat ure in degr ees C elsius. Temp erat ur e Sl ot 1 O M AP D isplays the curr ent P XI slot 1 con tro ller OM A P processor...
  • Page 119 T esti ng D isp lay Co mpone nt D escr ipt ion D ig ita l B oar d C ar d I D D isplays digit al boa rd ca rd I D number Dig it al B oar d C ar d D isplays digit al boa rd ca rd ve rsion number Rev isio n Di git al Boa rd Bu s...
  • Page 120 T esti ng 5. 2 .7 .E UI O p t io n s T he U I O pt ions t ab cont rols the screen backligh t leve l. Fig . 5- 11 System Con figur ation – U I Op tions Con tr ol Com ponen t D escr ipt ion Back ligh t...
  • Page 121 T esti ng 5. 2 .7 .F Ne t w o r k The Net wor k ta b cont rols the test set E ther net adapt or local a rea connectio n sett ings. The Eth ernet bus is used for re mo te con tro l of the test set. Fig.
  • Page 122 T esti ng 5. 2 .7 .G Da t e /T i m e T he D ate/ Time t ab con trol s the test set date /time clock pa ramete rs. Fig. 5- 13 S ystem Conf igur ation – D ate/ Time Con tr ol Com ponen t D escr ipt ion T ime...
  • Page 123 T esti ng T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . 5 - 18...
  • Page 124: Chapter 6 - P R I N C I P L E S O F O P E R A T I O N

    Kepl erian el ements n ot i nclud ed in the sta ndard Kep leria n eleme nts are set to zero. The GPSG-1000 g ene ra te s up dated en han ced Keple r i an (ep hemeris) ele me nts at a fixe d time interval o f 4 hou rs, th is b ein g the u pdate rate supp orte d by b oth GPS and Galil eo.
  • Page 125: G Ps Syste M

    P r in c i pal s o f O pe r a t i on 6.1. 2 G PS Sys tem Th e NAVST AR (Naviga ti on Satelli te T iming An d R angi ng) GPS (Gl obal Posi ti onin g System) is a sa te llite ba se d navig ation syste m offering p re c ision n aviga tio n capab ility.
  • Page 126 P r in c i pal s o f O pe r a t i on 6 . 1 . 2 . A S p a c e S e g m e n t Th e Space se gment consists of the GPS space ve hicle s (SV’s) or Satell ite s , no minal ly 24 SV’s p lus spares.
  • Page 127 P r in c i pal s o f O pe r a t i on With the GPS satellites in consta nt motion, the nu mb er o f satell ites i n vi ew and the ir rela tive l ocation is dyna mi c. A 24 satel lite configu r ati on provi des ade quate satell ite coverag e to pe rfo rm th ree-di me nsion al posi ti on fi xing.
  • Page 128: Sps Stan Dard Po Siti Oning Se Rvic E

    P r in c i pal s o f O pe r a t i on 6 . 1 . 2 . B C o n t r o l S e g m e n t Six unmann ed moni to ri ng sta ti ons are loca te d throu gho ut the worl d. Each Station constantly monitors and rece ives information from the GPS satel lites and sen ds the orbi tal and clock in fo rma tio n to the master con t ro l sta ti on.
  • Page 129: Posit Ion Calcul Ation

    P r in c i pal s o f O pe r a t i on broa dcast a rate of 1 .0 23 MHz. The satelli te sig nal rep eats i tsel f every milli second .  Th e C/A code i s al so u s ed to a cquire the P Code .
  • Page 130 P r in c i pal s o f O pe r a t i on Subframe s Subframes 1 to 5 ea ch provide a synch ro nizatio n, h and-o ve r wo rd a nd a C/A cod e ti me ambig uity re mo val.
  • Page 131 P r in c i pal s o f O pe r a t i on Ele vation d escribe s the an gle of a sa te llite rela ti ve to the horizo ntal pla ne. If a sa tel lite is directly abo ve the p oint of ob servation on the gro und , th en the ele v ati on is 90°.
  • Page 132 P r in c i pal s o f O pe r a t i on Fig . 6-10 GPS Rece ived Sign al To recover the da ta fro m spread spectrum si gn al at th e rece iver, th e en ergy sp re ad over a wide b and width must be correl ated or de- spre ad into a narrow ba ndwi dth by freq uency and co de shifting.
  • Page 133 P r in c i pal s o f O pe r a t i on Th e determina ti on of the sign al travel time an d data recove ry there fo re re qui re s n ot only correla ti on with all po ssible cod es at al l possibl e phase shi fts, bu t al so i den tifica tio n of th e correct ph ase carrier fre quen cy.
  • Page 134 P r in c i pal s o f O pe r a t i on Th e spe c tral pow er de nsity of the re ceived G PS si gnal la ys at app ro ximately 1 6 dB belo w th e spe c tral powe r den si ty o f the th ermal o r backgrou nd n oise.
  • Page 135 P r in c i pal s o f O pe r a t i on To mea s ure th e travel time: • Recei v er g ene ra te s the same code s a s the Satell ite (PRN cod es) •...
  • Page 136 P r in c i pal s o f O pe r a t i on Due to the atomic clocks onboard the satellites, the time at which the sate llite signal is transmitted i s known very precisely. Al l satellite clocks are adj ust ed to be sy nchroni ze d with each othe r a nd UTC (un iversal time coordi nated).
  • Page 137 P r in c i pal s o f O pe r a t i on 6 . 1 . 4 . E C l o c k B i a s To sol v e the p r oble m of clock bias, co nside r a rece iver is p laced o n a straig ht li ne ben eath tw o sa te llites.
  • Page 138 P r in c i pal s o f O pe r a t i on Distance to tw o p oin ts is kn own, desire d position i s in o ne of two lo cations F ig. 6-19 Tria ngul ation usin g two kn own po int Distance to three points is known, position is known.
  • Page 139 P r in c i pal s o f O pe r a t i on Distance to three points is known, position is known in 3D space. Fi g. 6-2 2 T r iang ula tio n using three kn own poi nts in 3 D sp ace 6 .
  • Page 140 P r in c i pal s o f O pe r a t i on 6 . 1 . 4 . H A t m o s p h e ri c D e l a y s Io n osp he r e: Th e iono sphere i s an a tmosph eric layer situated be tw een 90 to 100 0 km abo ve th e Earth’s surface.
  • Page 141: G Ps Tim Ekeep Ing

    P r in c i pal s o f O pe r a t i on Tr op osp h ere: Th e tro posph ere is th e lowe r p art o f the ea rt h' s atmo sphere (0 -1 5km), th at e ncompasses our wea th er.
  • Page 142: G Nss Accuracy

    P r in c i pal s o f O pe r a t i on Th e GPS-UT C o ffset fie ld can accommoda te 25 5 leap se conds (eig ht bi ts) which , give n th e current ra te o f chan ge of the Earth' s ro tatio n (w ith o ne lea p second i ntro duced app roximately every 1 8 mon th s ), sh ould b e sufficien t to la st until app roximately th e ye ar 230 0.
  • Page 143: G Nss Augme Ntation

    P r in c i pal s o f O pe r a t i on PDOP (Position al Dil uti on OF Pre c ision ) is a measure of overal l uncertain ty in a GPS posi tio n solutio n with T DOP n ot in clude d in th e esti ma te d uncertain ty. The b est PDOP (lowe s t valu e) w ould o c cu r wi th on e satelli te di rectl y ove r head a nd three othe rs even ly sp aced ab out the h orizon.
  • Page 144 P r in c i pal s o f O pe r a t i on All SBAS satellites su pport th e same protocols and therefore can su pport seamless aug me ntation from o ne regi on to a nother.  ...
  • Page 145 P r in c i pal s o f O pe r a t i on 6 . 1 . 7 . A S B A S S y s t e m s WAA S (Wi de Area Au gmentation System) Devel ope d a nd mana ged by the FAA, to au gment GPS, wi th the go al of i mp r oving its accuracy, i ntegrity, an d avail abil ity.
  • Page 146 P r in c i pal s o f O pe r a t i on To o ve r come thi s , RAIM was de ve lop ed and i s a mand atory fea ture o f all a vi ation-g r ade receive r s.
  • Page 147: G Ps Modernization Sign Als

    P r in c i pal s o f O pe r a t i on 6.1. 8 G PS Modernization Sign als A process of GPS system modern ization is now underway, which involv e s t h e i n t ro d u c t i o n of n ew signa ls to pro v ide improve m e nt s in a c cu r ac y a nd int eg ri ty .
  • Page 148 P r in c i pal s o f O pe r a t i on 6 . 1 . 8 . B C N A V N a v i g a t i o n M e s s a g e Th e CNAV d ata i s a n upgra ded versio n o f the orig inal NAV na vi gation messag e.
  • Page 149 P r in c i pal s o f O pe r a t i on 6 . 1 . 8 . C Civil ian, safety of li fe signa l pl ann ed to b e av a ilab le w ith first GPS IIF lau nch (20 09). T wo PRN rangi ng code s are transmitted on L5 : the in -ph ase code (de noted as the I5 -code);...
  • Page 150 P r in c i pal s o f O pe r a t i on CNAV-2 Nav igation m essa ge Th e L1C na vi gation messag e, ca lled CN AV-2 , is 1800 b its (in cl udi ng FEC) and i s tra nsmitted at 100 bit/s.
  • Page 151: The Ga Lileo System

    P r in c i pal s o f O pe r a t i on 6.1. 9 The Ga lileo Sy stem Ga lile o is the Euro pea n g lob al navig ation sa tel lite system which pro vides a hig hly accurate, guara nte ed glo bal po siti oni ng service unde r civi lian con trol .
  • Page 152 P r in c i pal s o f O pe r a t i on 6 . 1 . 9 . A G r o u n d E l e m e n t Tw o Gal ileo Co ntro l Centers: •...
  • Page 153 P r in c i pal s o f O pe r a t i on Signal E5 (E5a + E5b) Centre 119 1.795 (E5) 1 575 .4 2 Frequ ency 117 6.45 (E5a) 120 7.14 (E5b) Nomina l 51.15 (E5) 2 4.552 Ba ndwi dth 20.46 (E5a )
  • Page 154 P r in c i pal s o f O pe r a t i on Noise Th e level of noi se se en by a GPS re ceiver consi sts ma inly of the r ma l noise b ut al so background and inter-modulation n oi se .
  • Page 155 P r in c i pal s o f O pe r a t i on = the SNR (usua lly in dB) i n a 1Hz band width. Tha t ba ndwi dth i s typical ly 1 000 ti mes l ess tha n the a c tua l re ceiver ban dwid th , whi ch i m plie s a 30 db chan ge in dB-po wer uni ts: •...
  • Page 156 P r in c i pal s o f O pe r a t i on Refer to tab le 6-5. Assumin g a constant sa te llite pow er, you can o bserve th at the  ratio repo rte d b y the rece iver i s a functio n o f the noi se fig ure of the rece iver. N oise RF Po we r C /N...
  • Page 157 P r in c i pal s o f O pe r a t i on Ta ble 6 - 6 exampl e results show tha t RF powe r level s b etween -1 36.6 an d -135 .7 d Bm a ll prod uce th e sa me C /N rati o of 30 d B-H z.
  • Page 158: Chapter 7 - P R O D U C T S P E C I F I C A Ti O N S

    C h a p t e r 7 - P r o d u c t S p e c i f i c a ti o n s 7 . 1 G E N E R A T O R RF Output Level Direct:- -93 to -155 dBm in 1 dB steps.
  • Page 159 P rin cipa ls o f O pe rat ion GENERATOR (cont) Gal Integrity: Allows selection of CONNECTED or DISCONNECTED. (Carried in Galileo Nav Data Code Carrier Coherence: Sets frequency variation between code carriers Range 2m/S or 6.562 ft/S Increment 1mm/S or 001 ft/S L1 C/A code: Code Rate: 1.023 Mc/s Primary Code Length: 1023 bits...
  • Page 160: Master O Scillat Or

    P rin cipa ls o f O pe rat ion GENERATOR (cont) N A V D a t a : Navigation Data is computed in real-time to match the simulation Positional Simulation: Maximum Relative Velocity (Range Rate) ± 1000 kts Maximum Relative Jerk ±...
  • Page 161: B Att Ery

    P rin cipa ls o f O pe rat ion 7 . 4 B A T T E R Y Type: Lithium Ion, Removable Pack Voltage: 14.4 VDC Capacity: 6.75 AH Duration: 4 hrs Note: Battery charging temperature range: 0° to 45°C. 7 .
  • Page 162 P rin cipa ls o f O pe rat ion E N V IR O N M E N T A L (cont) Emissions: MIL-PRF28800F Class 2 EN 61326:1998 Class A EN 61000-3-2 EN 61000-3-3 Immunity: MIL-PRF28800F Class 2 EN 61326:1998Class A External AC-DC Converter Certifications Safety Compliance: UL 1950 DS...
  • Page 163 P rin cipa ls o f O pe rat ion T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . 7 - 6...
  • Page 164 Ap p e n d i x A P i n - O u t Ta b l e s ET HER NET CONNECTOR Fig. A- 1 Et herne t P in-O ut Di agram Pin N umber S igna l Ty pe S ig nal Type Fu ncti on D at a...
  • Page 165 USB HOST 2 C ONN ECT OR F ig. A -3 U SB H ost 2 Pin- O ut D iagr am Pin N umber S igna l Ty pe S ig nal Type Fu ncti on Pow er VC C U SB Pow er D at a D ata -...
  • Page 166 AUX CON NEC TOR F ig. A-6 AUX Connector Pin-Out Diagram Pi n N umbe r Sig nal Type Si gnal Ty pe Fun ctio n D ATA AR IN C 4 29 in A AR IN C 429 Ch annel 1 R X A D ATA AR IN C 4 29 in B AR IN C 429...
  • Page 167 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . A - 4...
  • Page 168 Ap p e n d i x B T e r m in ol og y Term Description Anti-Spoofing (AS) Is a policy of the U.S. Department of Defense by which the P-Code is encrypted (by the additional modulation of a so-called W-Code to generate a new "Y-Code"), to protect the militarily important P-Code signals from being "spoofed"...
  • Page 169 Binary Shift-Key (BSK) BSK is a modulation technique by which a binary message, such the Modulation Navigation Message or the PRN codes (consisting of 0's and 1's), is imprinted on the carrier wave. Unlike Amplitude Modulation (AM) and Frequency Modulation (FM), BSK Modulation does not alter the signal level (the "amplitude") or the carrier wavelength (the "frequency").
  • Page 170 Correlator The GPS receiver "software" or electronic means, implemented in some fashion (either analogue or digital) within a Tracking Channel, used to shift or compare the incoming signal with an internally generated signal. This operation is performed on the PRN codes, but may be used for more "exotic" mixed signals in the case of L2 measurements, where under the policy of Anti-Spoofing (AS) the L2 PRN code is not known.
  • Page 171 Dual Frequency Refers to the instrumentation that can make measurements on both L-Band frequencies, or to the measurements themselves (e.g., L1 and L2 pseudo-range or carrier phase measurements). Dual-frequency measurements are useful for high precision (pseudo-range-based) navigation because the Ionospheric Delay bias can be determined, and the data corrected for it.
  • Page 172 GPS Time (GPST) GPST is a form of Atomic Time, as is, for example, Coordinated Universal Time (UTC). GPST is "steered" over the long run to keep within one microsecond of UTC. The major difference is that while "leap seconds" are inserted into the UTC time scale every 18 months or so to keep UTC approximately synchronised with the earth's rotational period (with respect to the sun), GPST has no leap seconds.
  • Page 173 L1 Frequency GPS carrier frequency which contains the C/A-Code, the encrypted P-Code (or Y- 1575.42MHz Code) and the Navigation Message. Commercial GPS navigation receivers can track only the L1 carrier to make pseudo-range (and sometime carrier phase and Doppler frequency) measurements. Rice Factor The ratio between the power of the direct component and the mean power of the Rayleigh faded component in Rician fading, expressed in dB.
  • Page 174 Ap p e n d i x C E x p o r ti n g , E d i ti n g a n d I m p o r ti n g W a y p o i n ts The purp ose of this append ix is t o descr ibe a metho d of addin g custo m wayp oints to t he G PSG - 1000 wit hout using the g raphi cal user s int erf ace and touch s cr een to e nter wa yp oint data.
  • Page 175 Sel ect t he A dd bu tton, th e Waypo int Edit scree n appe ars ( Figu re C -2 ). F ig. C -2 Wa ypoint Edit S c reen O n t he W aypoint E dit Scr een select one of the lines fr om t he t able. For th is exe rcise we wil l select AN C , li ne 7.
  • Page 176 Sel ect t he C ode f ield a nd ent er a new code to identi fy th e new C ustom W aypoint . I n th is example we wil l use EXP 1. Pr ess D one, The new C ustom W aypoint wi ll be added to the Waypoi nt Li st ( Figur e C -4) .
  • Page 177 A green popup box w ill appear an d conf irm w hen the export has completed (F igure C -6) . Fig. C- 6 Waypoint E x port Su cc e s sf ul E d i ti n g t h e C u s to m e r W a y p o in t F il e Re mo ve the US B flash drive fr om the G P S G- 1000, and place the d rive in a PC .
  • Page 178 Text Ty pe E dit or T he Wa yp oint infor m ation may be edit ed, co pied, or new lines added. T he sent ence ter m s are ident ical t o t he E xcel typ e edit or file, how ever , th e line is a lready ter m inated wit h a comma.
  • Page 179 Pr ess th e Impor t From US B b utto n on lowe r le ft of t he Wa ypoint page. A pop- up bo x wil l appea r w ith a w arn ing t hat import ing f rom t he U SB w ill o v erw rit e th e existi ng w aypoint s on t he syste m .
  • Page 180 Ap p e n d i x D E x p o r t e d a n d I m p o r te d F i l e Fo r m a t s The GP SG - 1000 h as the abili ty t o impor t a nd ex por t a numbe r of dif fer ent f ile types f or diff eren t uses.
  • Page 181 An example of t he A lmanac d ata file: ******** Week 799 almanac for PRN-01 ******** Health: Eccentricity: 0.3730297089E-002 Time of Applicability(s): 61440.0000 Orbital Inclination(rad): 0.9613649345 Rate of Right Ascen(r/s): -0.7863184676E-008 SQRT(A) (m 1/2): 5153.619629 Right Ascen at Week(rad): 0.9558857469E+000 Argument of Perigee(rad): 0.444257464...
  • Page 182 N m e a F i l e s The Nm ea dir ector y cont ains files wit h a n N M E extensio n th at contain dat a in N M EA- 0183 senten ce fo rmat. T he G PS G -1000 is ab le t o use GG A , R M C and G S V sen tences from these file s.
  • Page 183 G SV Sat ellit es in V iew sho ws data ab out the sat ellite s t hat the uni t mi ght be able to f ind based on i ts view ing mask and almanac data. $GPGSV,3,1,11,29,65,303,50,05,63,046,52,26,36,124,45,02,31,082,49*73 Wher e: G SV Sat ellit es in view...
  • Page 184 R o u t e F il e s Ro ute f iles a re u s ed to popu late the rout e tab le on the Rou te p age ( Figur e D -2) .. Fig . D -2 R oute Page The fi les are sto red and expo rte d f rom the G P SG -10 00 in XML for m at.
  • Page 185 The Rou te da ta var iable s are for m atte d as follow s : Wayp oint Lo ngi tude is f ollow ed b y the longit ude va lue of th e w aypoint in DD D .DD D DD DD D for m at. Va lues in the we st ern hemisphe re a re i ndicate d by n egative values, and values i n the easte rn hemis pher e ar e ind icated by posi tive val ues.
  • Page 186 S e t ti n g s F i le s The Set tings file direct ory contain s sett ings f iles ge nerat ed f rom t he G P SG -10 00 Fi le/ Set tings page. T he S ettin gs dat a is in X ML for m at. Fo llow ing is an examp le of the G PSG - 1000 Pow er Up Set tings.
  • Page 187 W a y p o in t F il e s The Waypoin t fi le dir ector y cont ains u s er e nter ed cust om w aypoints creat ed on the wa yp oint page. Th e Wayp oint data is in CS V f ormat . The Waypoint fil es w ill op en in Excel.
  • Page 188 A p pe n d i x E R e c or d i n g a n d P l a y i n g T r a j e c to r y R o u te s Tra jector y fil es re corded by G P S r eceiver s or the G PSG - 1000 and saved in the .
  • Page 189 Fro m the low er port ion of th e Main Menu, select GP S RX (F igure E- 2). Fig. E- 2 Ma in Menus, Low er Sect ion The GP S RX page wi ll disp lay th e cur rent G PS posit ion f ix and the visible satelli te (Fi gure E 3).
  • Page 190 Wait for th e G PS R X t o acqu ire a 3d positi on fi x. ( Figur e E -4) . F ig. E-4 G P S R X Page wi th 3d Fix Pr ess th e R ecord Tra jector y but ton t o st art recor ding. T he G PS G 1000 w ill cont inue to recor d u ntil the S top Re cordin g but ton is pr essed.
  • Page 191 The data wil l be store d in a fi le w ith the follow ing naming conventi on: M M DD Y YYY _ H HM M SS .m n e . The t ime recor ded for the f ile name is th e time the r ecor ding is stopp ed. To lo ad the new Tra jector y Fil e for pl ayback select Fil e fr om th e Main Menu an d th en Tr aject ory f rom the tabs at t he t op of th e page .
  • Page 192 To run the T raje c tory File simulati on, se lect S etup fr om th e Main Menu. In the GN SS win dow in t he Simula tion fie ld select Tr ajecto ry. In th e P RN Sig nal field sel ect Tra j F ile. Set the R F Leve l in the R F Ou tput win dow to the desired level (Fi gure E- 8).
  • Page 193 T he S imulatio n w ill r un u ntil the end of th e Tr ajecto ry F ile ( Figur e E -10) . Fig . E -10 Tr ajecto ry S imulati on C omplet e S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s .
  • Page 194 A p p e n d i x F G P S G - 1 0 0 0 U S B M e m o r y D e v i c e F o r m a t C o m pa ti bi l i t y The GP SG - 1000 u s es U SB Memory Devices as a utilit y to updat e sof twa re and t o impor t and export almana c, r oute, and othe r f iles.
  • Page 195 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e c t t o E x p o rt C o n t ro l , s e e Co v er P a g e f o r d et a i l s . F F - 2...
  • Page 196 A p p e nd i x G C on n e c t i n g D ua l A n te n n a C o u p l e r Ki t GP SG D ual Ant enna Coup ler Kit Con nection S T E P PR OCE DUR E Co nnect Coaxia l C able (TN C) ( 50 f t) (suppl ied w ith the GP SG - 1000) bet ween the...
  • Page 197 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . G - 2...
  • Page 198 Ap p e n d i x H Co n n e c t i n g T r i p l e A n t e n n a C o u p l e r K i t G P SG T riple Ant enna Coup ler Kit Co nnectio n S T E P PR OCE DUR E...
  • Page 199 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . H - 2...
  • Page 200 A p p e n di x I D i r e c t C on n e c t i n g t o G P S R e c e i v e r s R e q u i r i n g A n te n n a L o a d S i m u l a to r s U s i n g t h e A e r o fl e x G P S G -1 0 0 0 a n d O p t i o n a l K i t S ome G PS r eceiver s req uire a r esistive load be pr esent on t he an tenna por t of the recei v er f or pr oper oper atio n.
  • Page 201 Us in g th e G PS G- 1000 Us er ’s Manu al as a r efer ence, set up and begin a G N SS simulat ion on the G PSG - 1000. S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . I - 2...
  • Page 202 T HI S PAG E IN TEN TI ON AL LY L EFT BLA NK . S u b j e ct t o E x p o r t C o n tr o l , s ee C o ve r P a g e f o r d e t ai l s . I - 3...
  • Page 203: Envi Ronment Al

    In de x App endix A Pow er R equir ements ....Pin- O ut T ables Bat ter y R echargi ng .
  • Page 204: Sv Pr N Se Lection Funct Ion W Indow

    Test Set Fun c tions ....Cal ibrat ion Functio n Win dow ..3 -30 Dia gnostics Functi on Wi ndow .
  • Page 205 We reserve the right to make design changes without notice. Go to http://ats.aeroflex.com/about-us/quality/standard-hardware-warranty for Sales and Service contact information. EXPORT CONTROL WARNING: This document contains controlled technical data under the jurisdiction of the Export Administration Regulations (EAR), 15 CFR 730-774.

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