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GpsReceiverGetSatelliteTrackingIndexEvaluator Method (EvaluatorGroup)

Returns an evaluator that identifies the satellites that are tracked by the GPS receiver at a given date. The satellites are identified as indices into the NavigationSatellites collection.

Namespace:  AGI.Foundation.Navigation
Assembly:  AGI.Foundation.Navigation (in AGI.Foundation.Navigation.dll) Version: 21.1.408.0 (21.1.408.0)
public Evaluator<int[]> GetSatelliteTrackingIndexEvaluator(
	EvaluatorGroup group


Type: AGI.FoundationEvaluatorGroup
The group with which to associate the new evaluator. By grouping evaluators that are often evaluated at the same Julian dates, common computations can be performed only once for the entire group instead of multiple times for each evaluator.

Return Value

Type: EvaluatorInt32
An evaluator of the currently tracked GPS satellites.
ArgumentNullException Thrown when group is .
ServiceNotAvailableException Thrown when this GPS receiver's Antenna does not have the ILocationPointService or the IOrientationAxesService.
The Earth Fixed frame is used for some computations. It is obtained from the EarthCentralBody contained in the CentralBodiesFacet instance in the CalculationContext.
See Also