Gps Status Screen; Gps Status Screen Structure-First Page; Bad Fix Code - Magellan RoadMate 3000T Reference Manual

GPS Status Screen

GPS STATUS Screen Structure-first page

It is ordered by the channel number from 1 to 12.
Where:
d1: Satellite PRN number, with "e" or "E" to the right means got ephemeris data, "v" or "V" to the right means got verified
ephemeris data (double check). "E" or "V" also means got satellite time for this channel.
d2: Azimuth, in degrees
d3: Elevation angle, in degrees
d4: SNR (signal to noise ratio), it is ratio-Hz, not dB unit
c1: U – Used for position fix, U – Not used for position fix

Bad fix code

0 PVT_OK :good fix
2 ILLEGAL_ALT: illegal altitude
4 POSITION_JUMP: too big position jump between two epoch (300 miles)
5 ILLEGAL_VELOCITY_OR_ALT: max velocity 951mile
7 TOO_BIG_ACCELERATION max 15m around 1.5g
8 TOO_SMALL_ALTITUDE
9 TOO_BIG_ALTITUDE
10 TOO_BIG_PDOP
11 SATS_BELOW_MASK_ANGLE satellite elevation angle is below mask angle
16 ILL_DEFINED_3D_MATRIX 3X3 matrix can not be inverted in 3D fix
CH PRN
01 d1
02 d1
03 d1
04 d1
05 d1
06 d1
07 d1
08 d1
09 d1
10 d1
11 d1
12 d1
13 d1
14 d1
< -10km or > 17.5km
-10000 m
17,500 m
max PDOP 50
Appendix
AZ EL SNR
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
d2 d3 d4
92
U/N
c1
c1
c1
c1
c1
c1
c1
c1
c1
c1
c1
c1
c1
c1