u-blox ANTARIS 4 User Manual

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Anotherbenefit istheuseofGPSintegrityinformation.InthatwaySBASControlstationscan‘disable’usageof
GPS satellites in case of major GPS satellite problems within 6 seconds time to alarm. The ANTARIS
®
4 GPS
• RTCA/DO-229C(MOPS).Availablefrom
www.rtca.org
Technologywillonlyusesatellites,forwhichintegrityinformationisavailable,ifintegritymonitoringisenabled.
FormoreinformationonSBASandassociatedservicespleasereferto

•
gps.faa.govforinformationonWAASandtheNSTB
•
www.esa.intforinformationonEGNOSandtheESTB
•
www.essp.be for information about European Satellite Services Provider EEIG is the EGNOS operations
manager.
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SBAS GEO PRN Numbers
ThePRNoftheGEO’susedforSBASareinarangefrom120to150.showstheSBASGEO’sinoperation.
GEOidentification Stationedover GPSPRN SBASProvider
INMARSATAOR-E (AtlanticOceanRegionEast) EasternAfrica 120 EGNOS
INMARSATAOR-W (AtlanticOceanRegionWest) WesternAfrica 122 WAAS
Artemis Africa(Congo) 124 EGNOS
INMARSATIOR-W(III-F5) (IndianOceanRegionWest) Africa(Congo) 126 EGNOS
MTSAT-1R Pacific 129 MSAS
INMARSATIOR (IndianOceanRegion) IndianOcean 131 EGNOS
INMARSATPOR (PacificOceanRegion) Pacific 134 WAAS
PanAmSatGalaxy15 133degreeswest 135 WAAS
MT AT-2 Pacific(notlauS nchedyet) 137 MSAS
Tele atAnik/F1Rs st 138 WAAS107degreewe
Table 2: PRN of GEO's used for SBAS
afeaturetomakeGPSmoreaccurateandreliableinurbancanyonenvironmentsandduring
e to measure its speed,
a
GPSreceiver, aturn
ratesensor(gyroscope)andaspeedindicator(odometer).Bycombiningtheinformationofallsensorsaposition
canbedeterminedevenifGPSpositioningisdegradedorimpossibleduetorestrictedskyview.Thismeansthat
aDRenabledreceivercontinuestoreportpositions,whenGPS
signalsareblocked,suchasintunnelsorinheavy
urbancanyonenvironments.
1.11 Dead Reckoning enabled GPS (DR)
Deadreckoningis
periods of GPS outage. It uses extra sensors (in addition to GPS) installed in the vehicl
headinganddirection(forward, backward).Thereforea DR enabledReceiver consistsof
GPS Kalman Filter
GPS
receiver
Dead Reckoning
Parameter
Enhanced Kalman Filter (EKF)
Position,
Speed,
Direction,
Time
Calibration
TurnRate
Speed
Forward/Backward
Signals
GPSPosition,
GPS ata
GPS
D

Figure 27: Dead Reckoning Block diagram
GPSModules-SystemIntegrationManual(SIM)(incl.ReferenceDesign) GPSFundamentals
GPS.G4-MS4-05007-A1
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u-blox ANTARIS 4 Specifications

General

Brand	u-blox
Model	ANTARIS 4
Category	GPS
Language	English