u-blox ANTARIS 4 - N Avigation Update Rate; Dynamic Platform Model

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4.6.2 avigation Update Rate N
TheANTARIS
®
4GPSTechnologysupportsrawdataandnavigation updaterateshigheror lowerthan 1update
persecond.
Parameter Description
Measurement Period
Definesthetimebetweentworawdata(pseudorange)measurements.
Navigation Rate
Definesthenavigationupdaterate(seeformulabelow).
Time Source
9
DefineswhetherthenavigationupdateisalignedtoGPStimeorUTC.
Table 28: Navigation rate parameters
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mstPeriodMeasuremenRateNavigation
sUpdateRateNavigation
*
1000
/1
= 

 Note Theupdateratehasadirectinfluenceonthepowerconsumption.Themorefixesthatarerequired,
themoreCPUpowerandcommunicationresourcesarerequired.
 Note ThehigherthedynamicsofthedeviceholdingaGPSsystem,thefasterthepositionupdateshallbe. 
Formostapplicationsa
1Hzupdateratewouldbesufficient.
4.6.3 Dynamic Platform Model
TheANTARIS
®
4GPSTechnologysupportsdifferentdynamicplatformmodelstoadjustthenavigationengineto
theexpectedenvironment.Theseplatformsettingscanbechangeddynamicallywithoutdoingapowercycleor
reset.Itallowsabetterinterpretationofthemeasurementsandhenceprovidesamoreaccuratepositionoutput.
Setting the GPS receiver
 to an unsuitable platform model for the application environment may reduce the
receiverperformanceandpositionaccuracysignificantly.


9
Thisparameterhasonlyaneffectifthenavigationupdaterateislessthan1updatepersecond(e.g.1updateper10s).
GPSModules-SystemIntegrationManual(SIM)(incl.ReferenceDesign) ReceiverDescription
GPS.G4-MS4-05007-A1
  Page 97