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SIM66 Series_NMEA Message_User Guide_V1.01 Document Title: SIM66 Series_NMEA Message_User Guide Version: 1.01 Date: 2021.11.04 Status: Released GENERAL NOTES SIMCOM OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS, TO SUPPORT APPLICATION AND ENGINEERING EFFORTS THAT USE THE PRODUCTS DESIGNED BY SIMCOM. THE INFORMATION PROVIDED IS BASED UPON REQUIREMENTS SPECIFICALLY PROVIDED TO SIMCOM BY THE CUSTOMERS.
SIM66 Series_NMEA Message_User Guide_V1.01 About Document Version History Version Date Owner What is new V1.00 2021.01.19 Jian.ni Original V1.01 2021.11.04 Wenjie.lai Add SIM66M in scope Scope This document applies to the following products Name Type Size(mm) Comments SIM66MB GPS+BDS 9.7*10.1*2.5 SIM66M GPS+GLONASS 9.7*10.1*2.5...
SIM66 Series_NMEA Message_User Guide_V1.01 Contents About Document ........................3 Version History ............................3 Scope ..............................3 Contents ..........................4 Introduction ........................5 Purpose of the document ......................5 Related documents ......................... 5 Conventions and abbreviations ....................5 NMEA Messages ......................6 General Format of NMEA Messages ..................
SIM66 Series_NMEA Message_User Guide_V1.01 1 Introduction 1.1 Purpose of the document At present, has been built and is planning the construction of a satellite navigation system apart from United States GPS system, and Russia’s GLONASS system, the European Galileo system, Beidou satellite navigation system in China and Japan and Indian regional satellite navigation systems.
SIM66 Series_NMEA Message_User Guide_V1.01 2 NMEA Messages 2.1 General Format of NMEA Messages NMEA messages use the ASCII character set and have a defined format. Each message begins with a $ (hex 0x24) and end with a carriage return and line feed (hex 0x0D 0x0A, represented as <CR><LF>). Each message consists of one or more fields of ASCII letters and numbers, separated by commas.
SIM66 Series_NMEA Message_User Guide_V1.01 General Type of NMEA Messages The message format described in this section is for the versions shown as below: The version of Beidou related messages extended on the basis of NMEA 3.0 (nmeaVer in CFGNMEA command is h30) The version of Beidou related messages extended on the basis of standardNMEA4.1 ($GBGSA, nmeaVer in CFGNMEA command is h51) The version of Beidou related messages extended on the basis of standardNMEA4.1 ($BDGSA, nmeaVer...
SIM66 Series_NMEA Message_User Guide_V1.01 North latitude South latitude Longitude, in the format of dddmm.mmmmm Degrees mm.mmmmm Minutes East longitude or west longitude indicator East longitude West longitude Positioning status indicator Invalid UINT Point positioning Differential positioning INS positioning NoSV UINT Number of satellites participating in positioning Horizontal dilution of precision, 0.00 ~ 99.99, the value is HDOP...
SIM66 Series_NMEA Message_User Guide_V1.01 Example:$GPGLL,4004.74005,N,11614.19613,E,060845.00,A,A*6F Parameter Format Description Positioning system flag GPS+SBAS+QZSS joint positioning(1) BDS system standalone positioning Multiple system joint positioning Latitude, in the format of ddmm.mmmmm Degrees mm.mmmmm Minutes North or south latitude indicator North latitude South latitude Longitude, in the format of dddmm.mmmmm Degrees mm.mmmmm...
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SIM66 Series_NMEA Message_User Guide_V1.01 P, systemID*cs Example:$GPGSA,A,3,02,03,06,09,12,17,19,23,28,25,,,1.34,0.85,1.04,1*1E Parameter Format Description Positioning system flag GPS+SBAS+QZSS joint positioning(1) BDS system standalone positioning Multiple system joint positioning Positioning mode specified states Smode Manually specify 2D or 3D positioning Automatically switch to 2D or 3D positioning Positioning mode Not positioning UINT...
SIM66 Series_NMEA Message_User Guide_V1.01 (2) (3) (4) (5) (6) (7): Only supported by firmware with the version of R3.4.0.0 or above 2.3.4 Message ID GSV: Visible GNSS Satellites Syntax:$GSV,NoMsg,MsgNo,NoSv,sv1,elv1,az1,cno1,sv2,elv2,az2,cno2,sv3,elv3,az3,cno3,sv4,el v4,az4,cno4,signalID*cs Example: $GPGSV,3,01,11,02,34,277,41,03,16,043,35,05,04,215,35,06,69,333,48,0*57 $GPGSV,3,02,11,09,25,110,41,12,31,305,43,17,55,116,46,19,76,088,46,0*56 $GPGSV,3,03,11,23,23,077,40,25,04,328,32,28,05,171,36,0*67 $GBGSV,3,01,12,01,37,145,42,02,34,225,39,03,44,188,42,04,25,123,37,0*4C $GBGSV,3,02,12,05,17,249,36,06,30,169,38,07,03,188,31,08,69,027,43,0*4E $GBGSV,3,03,12,09,09,186,34,10,15,211,36,12,26,306,40,13,60,316,44,0*48 Parameter Format Description System identification GPS satellite information BDS satellite information...
SIM66 Series_NMEA Message_User Guide_V1.01 CNR of the first to fourth satellite (0~90dBHz), fixed output cno1~cno4 UINT of 2 digits, add zero up front if less than 2 bits fill null for untracked satellites signalID UINT Signal ID defined by NMEA protocol (fixedly output 0) Checksum A hexadecimal number obtained by calculating an XOR of all characters from '$' to '*' in this statement...
SIM66 Series_NMEA Message_User Guide_V1.01 West longitude Speed over ground, unit: knot, fixed output of three decimal DOUBLE places Course over ground, unit: degree DOUBLE Calculated clockwise from north UTC date, in the format of ddmmyy date Month Year DOUBLE Magnetic declination, specified to null Magnetic declination direction, specified to null Positioning mode Not positioning...
SIM66 Series_NMEA Message_User Guide_V1.01 DOUBLE Speed over ground, unit: knot Unit of speed, specified to constant N DOUBLE Speed over ground, unit: km/h Unit of speed, specified to constant K Positioning mode Not positioning mode Point positioning Differential positioning INS positioning Checksum A hexadecimal number obtained by calculating an XOR of all characters from '$' to '*' in this statement...
SIM66 Series_NMEA Message_User Guide_V1.01 NOTE (1): GPS+SBAS+QZSS joint positioning is only supported by firmware with the version of R3.4.0.0 or above 2.3.8 Message ID GST: Output GNSS Pseudorange Error Syntax:$GST,time,rngRMS,stdMajor,stdMinor,hdg,stdLat,stdLon,stdAlt*cs Example:$GPGST,060845.00,0.6,,,,0.07,0.09,0.09*47 Parameter Format Description Positioning system flag GPS+ SBAS+QZSS joint positioning(1) BDS system standalone positioning Multiple system joint positioning UTC time, in the format of hhmmss.ss...
SIM66 Series_NMEA Message_User Guide_V1.01 NmeaVer h30 2.4.1 Message ID GGA: Output GNSS Positioning Data Syntax:$GGA,time,Lat,N,Lon,E,FS,NoSV,HDOP,msl,M,Altref,M,DiffAge,DiffStation*cs Example:$GPGGA,063952.000,4002.229934,N,11618.096855,E,1,4,2.788,37.254,M,0 ,M,,*71 Parameter Format Description Positioning system flag GPS+ SBAS+QZSS joint positioning(1) BDS system standalone positioning Multiple system joint positioning UTC time, in the format of hhmmss.sss Hours time Minutes...
SIM66 Series_NMEA Message_User Guide_V1.01 Differential correction latency seconds Null DiffAge DOUBLE non-differential positioning Reference station ID DiffStation DOUBLE Null for non-differential positioning Checksum A hexadecimal number obtained by calculating an XOR of all characters from '$' to '*' in this statement <CR><LF>...
SIM66 Series_NMEA Message_User Guide_V1.01 Invalid Valid Checksum A hexadecimal number obtained by calculating an XOR of all characters from '$' to '*' in this statement <CR><LF> End of message termination NOTE (1): GPS+SBAS+QZSS joint positioning is only supported by firmware with the version of R3.4.0.0 or above 2.4.3 Message ID GSA: Output GNSS Dilution of Precision and Effective Satellite Information...
SIM66 Series_NMEA Message_User Guide_V1.01 VDOP DOUBLE Vertical dilution of precision, 0.0~127.000 Checksum A hexadecimal number obtained by calculating an XOR of all characters from '$' to '*' in this statement <CR><LF> End of message termination NOTE (1): GPS+SBAS+QZSS joint positioning is only supported by firmware with the version of R3.4.0.0 or above.
SIM66 Series_NMEA Message_User Guide_V1.01 MSAS satellite number is 49, 57 GAGAN satellite number is 47, 48 elv1~elv4 UINT Elevation of the first to fourth satellite (0 ~ 90 degrees) az1~az4 UINT Azimuth of the first to fourth satellite (0 ~ 359 degrees) CNR of the 1st to 4th satellites (0 ~ 90dBHz), fill null for cno1~cno4 UINT...
SIM66 Series_NMEA Message_User Guide_V1.01 Longitude, in the format of dddmm.mmmmmm Degrees mm.mmmmmm Minutes East longitude or west longitude indicator East longitude West longitude DOUBLE Speed over ground, unit: knot Course over ground, unit: degree DOUBLE Calculated clockwise from north UTC date, in the format of ddmmyy Month date Year...
SIM66 Series_NMEA Message_User Guide_V1.01 DOUBLE Speed over ground, unit: km/h Unit of speed, specified to constant K Positioning mode Not positioning mode Point positioning INS positioning Checksum A hexadecimal number obtained by calculating an XOR of all characters from '$' to '*' in this statement <CR><LF>...
SIM66 Series_NMEA Message_User Guide_V1.01 Navigation Result Message 2.5.1 NAVPOS: Output the Receiver Position Information Syntax:$NAVPOS,time,system,quality,X,Y,Z,lat,lon,height*cs Example:$NAVPOS,282201000,5,3,2160481.168,4383619.182,4084735.203,40.078998,116.236534, 52.843847*1C Parameter Format Description Time corresponding to the positioning solution time UINT The time definition depends on the current positioning system, the priority is GPS>BDS>GAL>GLO Current positioning system bit0 system...
SIM66 Series_NMEA Message_User Guide_V1.01 System UINT Same as system definition in NAVPOS quality UINT Same as quality definition in NAVPOS DOUBLE Vx of ECEF coordinate system, in m/s DOUBLE Vy of ECEF coordinate system, in m/s DOUBLE Vz of ECEF coordinate system, in m/s clockDrift DOUBLE Equivalent speed of crystal drift, in m/s...
SIM66 Series_NMEA Message_User Guide_V1.01 2.5.4 NAVACC: Output Accuracy Information of Receiver Positioning Speed Measurement Syntax:$NAVACC,time,status,pAcc,vAcc,cAcc*cs Example:$NAVACC,085206.00,A,2480, 70,1250*cs Parameter Format Description UTC time, in the format of hhmmss.sss Hours time Minutes ss.sss Seconds Data validity identification status UINT Invalid Valid Horizontal positioning accuracy, mean square deviation of pAcc UINT two-dimensional horizontal positioning error, in 0.001m...
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