Kongsberg DPS 232 - GNSS Processing

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Conguration

Figure22GNSSsensorgeometrycongurationview

5.5.2GNSSprocessing

Foroperationswithweaksatellitegeometry,theuseofheightaidingand/oralower

elevationmask,mayimprovethepositionavailability.

AvailableheightaidingmodevaluesareFilterandOff.Theheightaidingmodeis

normallysettoFilter.InheightaidingmodeFilter,theprocessingsoftwarewillusethe

averagedantennaheightmeasurementasacontributiontothepositionsolution.For

operationswithvaryingheight,heightaidingmodeshouldbesettoOff.

Theelevationmaskhasadefaultvalueof10degrees,whichistherecommendedsetting

formostscenarios.UnderspecialconditionstheElevationmaskmightbechangedin

ordertoimprovethesatellitegeometryorreducemultipath.Therecommendedvalue

rangeisfrom7to15degrees.

Thepositionintegritystatusindication(Safe,Caution,Unsafe)isbasedontheposition

Accuracylevel.Thevessel'soperationalmodemayrequiretheaccuracyleveltobe

modied.Thedefaultvalueis10m.IftheEPEvalueislargerthantheaccuracylevel,

thesystemintegritystatusisindicatedasUnsafe.

TheIonosphereactivityvalueisusedtoindicatethelevelofionosphericactivity.

AvailablevaluesareNormal,MediumandHigh.ThedefaultvalueisNormal.

Note

Duringperiodswithincreasedionosphericactivity,thisvalueshouldbesettoHighfor

optimizedsystemperformance.Distantsinglefrequencyreferencestationswillthenhave

lessinuenceonthepositioncalculations.

G210-14/3.0