FFGroundObservationFile Object

Description

The FFGroundObservationFile object provides functionalities for reading and writing GroundStationObservation data (azimuth, elevation, range, and range rate) to or from FreeFlyer's ASCII file format. The time system for the epoch is TAI in Modified Julian format, range and range-rate data are given in km and km/s, and azimuth and elevation are given in radians in GS Local coordinates.

Inheritance Hierarchy: Object->TrackingDataFile->GroundObservationFile->FFGroundObservationFile

Available In Editions:

Mission

Timing Precision Mode

This page describes functionality in millisecond timing precision mode. Millisecond timing precision mode is deprecated and will be removed in a future release. We recommend that you migrate your Mission Plans to nanosecond timing precision mode.

Click here to see the documentation for this object in nanosecond timing precision mode.

Signatures	Description
FFGroundObservationFile()	Create a FFGroundObservationFile object without associating the contained Observations with any other objects.
FFGroundObservationFile(String fileName)	Create a FFGroundObservationFile object and read Observation data from the file provided.
FFGroundObservationFile({GroundStation} observingGroundStations, Spacecraft observedSpacecraft)	Create a FFGroundObservationFile object, and associate the contained Observations with "observingGroundStations" and "observedSpacecraft".
FFGroundObservationFile({GroundStation} observingGroundStations, Transponder observedTransponder)	Create a FFGroundObservationFile object, and associate the contained Observations with "observingGroundStations" and "observedSpacecraft".
FFGroundObservationFile({GroundStation} observingGroundStations, Transponder observedTransponder, Sensor observedSensor)	Create a FFGroundObservationFile object, and associate the contained Observations with "observingGroundStations" and the "observedTransponder"-"observedSensor" pair.
FFGroundObservationFile(String fileName, {GroundStation} observingGroundStations, Spacecraft observedSpacecraft)	Create a FFGroundObservationFile object, read Observation data from the file provided, and associate the contained Observations with "observingGroundStations" and "observedSpacecraft".
FFGroundObservationFile(String fileName, {GroundStation} observingGroundStations, Transponder observedTransponder)	Create a FFGroundObservationFile object, read Observation data from the file provided, and associate the contained Observations with "observingGroundStations" and "observedSpacecraft".
FFGroundObservationFile(String fileName, {GroundStation} observingGroundStations, Transponder observedTransponder, Sensor observedSensor)	Create a FFGroundObservationFile object, read Observation data from the file provided, and associate the contained Observations with "observingGroundStations" and the "observedTransponder"-"observedSensor" pair.

Name	Description	Attributes
DataSpanEndEpoch	The Epoch of the last Observation in the file.	Type: Variable Access: Read-Only Units: day
DataSpanStartEpoch	The Epoch of the first Observation in the file.	Type: Variable Access: Read-Only Units: day
DeclaredName	The name of the object as declared.	Type: String Access: Read-Only
Filename	The file name to load.	Type: String Access: Read/Write
FirstObservation	The first Observation in the file.	Type: Observation Access: Read-Only
LastObservation	The last Observation in the file.	Type: Observation Access: Read-Only
Name	The name displayed for this object in output windows such as views, plots, and reports.	Type: String Access: Read/Write
NoObservationErrorAction	Specifies the behavior when no matching observations are found in the TrackingDataFile.	Type: Variable Access: Read/Write
ObjectBeingObserved	The Spacecraft that is being observed.	Type: Object Access: Read-Only
ObjectId	The unique identifier for the object.	Type: Variable Access: Read-Only
ObjectType	The type of the object.	Type: String Access: Read-Only
ObservedSensor	The Sensor object that is attached to the Transponder being observed. The Sensor's X, Y, and Z position properties will be used to model an offset from the origin of the Spacecraft BCS when modeling measurements.	Type: Sensor Access: Read-Only
Observers	An array of the observing GroundStations.	Type: Array of GroundStation Access: Read-Only
UseAzimuth	A flag indicating whether or not the Azimuth measurement will be used.	Type: Variable Access: Read/Write
UseDeclination	A flag indicating whether or not the Declination measurement will be used.	Type: Variable Access: Read/Write
UseElevation	A flag indicating whether or not the Elevation measurement will be used.	Type: Variable Access: Read/Write
UseIonosphericCorrection	A flag indicating whether or not the Ionospheric correction will be used.	Type: Variable Access: Read/Write
UseLightTimeCorrection	A flag indicating whether or not the Light-Time correction will be used.	Type: Variable Access: Read/Write
UseMeasurementWeighting	A flag indicating whether or not to perform measurement weighting using internal geometric-based expressions. Measurement weighting should be turned off if a custom Measurement Noise model is implemented at the script level.	Type: Variable Access: Read/Write
UseRange	A flag indicating whether or not the Range measurement will be used.	Type: Variable Access: Read/Write
UseRangeRate	A flag indicating whether or not the Range-Rate measurement will be used.	Type: Variable Access: Read/Write
UseRightAscension	A flag indicating whether or not the Right Ascension measurement will be used.	Type: Variable Access: Read/Write
UseTroposphericCorrection	A flag indicating whether or not the Tropospheric correction will be used.	Type: Variable Access: Read/Write