NMEA Datenstrom von GPS Modul zu Tarot OSD Board
Habe mal die Datenleitung des GPS Modul zum Tarot OSD Board mittels CD4049 angekoppelt und über RS232 Schnitstelle am PC aufgenommen. Mir ging es darum, zu wissen, was übertragen wird und ob man dieses Signal für ein GPS Tracking der Groundstation benutzen kann.
Ergebnis: Man kann es für ein GPS Tracking der Bodenstation ohne Probleme nutzen.
Vielleicht hilft der Beitrag euch Tarot Usern.
Übersicht über die Messergebnisse:
######## whole test fixture outside a building ##############
$GPRMC,103022.60,A,4818.95501,N,01135.73553,E,0.321,,251115,,,D*7E
$GPGGA,103022.60,4818.95501,N,01135.73553,E,2,07,1.58,479.6,M,46.3,M,,0000*51
$GPRMC,103022.80,A,4818.95498,N,01135.73552,E,0.367,,251115,,,D*72
$GPGGA,103041.20,4818.95398,N,01135.73424,E,2,06,1.58,481.8,M,46.3,M,,0000*5F
$GPRMC,103041.40,A,4818.95400,N,01135.73415,E,0.388,,251115,,,D*79
$GPGGA,103041.40,4818.95400,N,01135.73415,E,2,06,1.58,481.9,M,46.3,M,,0000*5C
$GPRMC,103041.60,A,4818.95395,N,01135.73416,E,0.376,,251115,,,D*72
$GPGGA,103041.60,4818.95395,N,01135.73416,E,2,06,1.58,481.9,M,46.3,M,,0000*56
The GPS Modul is transmitting continuosly Data to the Tarot OSD board with 38400 Baud
according NMEA Standard these datas
$GPRMC = Global positining Recommendated Minimum Sentence (RMC)
$GPGGA = Global positioning fix data (GGA)
e.g. my home example
$GPRMC,103041.60,A,4818.95395,N,01135.73416,E,0.376,,251115,,,D*72
$GPGGA,103041.60,4818.95395,N,01135.73416,E,2,06,1.58,481.9,M,46.3,M,,0000*56
######### test fixture switched off and moved to basement without receiving a GPS signal; now switched ON again; first data from previous activity are transmitted, than data with information about GPS modul then data with #######
$GPRMC,,V,,,,,,,,,,N*53
$GPGGA,,,,,,0,00,99.99,,,,,,*48
indicating no reception #####################
######### whole data protocol under this condition ###########
$GPRMC,103041.60,A,4818.95395,N,01135.73416,E,0.376,,251115,,,D*72
$GPGGA,103041.60,4818.95395,N,01135.73416,E,2,06,1.58,481.9,M,46.3,M,,0000*56
$GPRMC,103041.80,A,4818.95393,N,01135.73420,E,0.378,,251115,,,D*71
$GPGGA,103041.80,4818.95393,N,01135.73420,E,2,06,1.58,482.0,M,46.3,M,,0000*51
$GPR
$GPTXT,01,01,02,u-blox ag -
www.u-blox.com*50
$GPTXT,01,01,02,HW UBX-G60xx 00040007 FFF9FFFFp*5D
$GPTXT,01,01,02,ROM CORE 6.02 (36023) Oct 15 2009 16:52:08*56
$GPTXT,01,01,02,ANTSUPERV=AC SD PDoS SR*20
$GPTXT,01,01,02,ANTSTATUS=DONTKNOW*33
$GPRMC,,V,,,,,,,,,,N*53
$GPGGA,,,,,,0,00,99.99,,,,,,*48
$GPRMC,,V,,,,,,,,,,N*53
$GPGGA,,,,,,0,00,99.99,,,,,,*48
############## now at same location only switched OFF and ON ##########
$GPRMC,,V,,,,,,,,,,N*53
$GPGGA,,,,,,0,00,99.99,,,,,,*48
$GPRMC,,V,,,,,,,,,,N*53
$GPGGA,,,,,,0,00,99.99,,,,,,*48
$GPTXT,01,01,02,u-blox ag -
www.u-blox.com*50
$GPTXT,01,01,02,HW UBX-G60xx 00040007 FFF9FFFFp*5D
$GPTXT,01,01,02,ROM CORE 6.02 (36023) Oct 15 2009 16:52:08*56
$GPTXT,01,01,02,ANTSUPERV=AC SD PDoS SR*20
$GPTXT,01,01,02,ANTSTATUS=DONTKNOW*33
$GPRMC,,V,,,,,,,,,,N*53
$GPGGA,,,,,,0,00,99.99,,,,,,*48
$GPRMC,,V,,,,,,,,,,N*53
$GPGGA,,,,,,0,00,99.99,,,,,,*48