Sierra Wireless 20070914 Cell Phone User Manual


 
Global Positioning System (GPS)
Rev 3.0B Feb.08 85
ExamplesoftrackingapplicationsusingRAP:
AirTrak
TrackStar
CompassCom
ZollData
HTE
Spillman
andothers...
National Marine Electronics Association (NMEA)
NationalMarineElectronicsAssociation(NMEA)isaprotocol
bywhichmarineinstrumentsandmostGPSreceiverscan
communicatewitheachother.NMEAdefinestheformatof
manydifferentGPSmessage(sentence)types,whichare
intendedforusebynavigationalequipment.
ExampleofatrackingapplicationusingNMEA:
MicrosoftStreetsandTrips
Tip: For more information on the PinPoint X supported NMEA
message formats, please refer to the Appendix.
Trimble ASCII Interface Protocol (TAIP)
TrimbleASCIIInterfaceProtocol(TAIP)isadigitalcommuni
cationinterfacebasedonprintableASCIIcharacters overa
serialdatalink.TAIPwasdesignedspecificallyforvehicle
trackingapplicationsbuthasbecomecommoninanumberof
otherapplications,suchasdataterminalsandportable
computers,becauseofitseaseofuse.
ExampleofatrackingapplicationusingTAIP:
DeLormeStreetAtlasUSA
Tip: For more information on TAIP message formats, refer to the
Appendix and to the Sierra Wireless MP 3G Modem TAIP Reference.
Datum
TheGPSdatumisthemethodofascertainingthepositionof
theGPSdeviceusingaspecificreferencepointlocation.The
datumusedcaninfluencetheaccuracyoftheGPSpositioning.
Inadditiontodifferentreportingprotocols,thePinPointX
supportsthemostwidelyusedGPSdatum:
WGS84