SpacecraftObservationFile Object

Description

The SpacecraftObservationFile object provides functionality for reading and writing SpacecraftObservation data (azimuth/right ascension, elevation/declination, range, and range-rate) to or from FreeFlyer's ASCII file format. The time system for data contained in the SpacecraftObservationFile is TAI in Modified Julian format and range and range-rate data are given in km and km/s, respectively. Azimuth, elevation, right ascension, and declination data are given in radians in the reference frame of the observing Sensor. Lastly, the spacecraft observer position is given in km, in the ICRF inertial reference frame.

Inheritance Hierarchy: Object->TrackingDataFile->SpacecraftObservationFile

Available In Editions:

Mission

Timing Precision Mode

This page describes functionality in nanosecond timing precision mode.

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

Name	Description	Attributes
DataSpanEndEpoch	The Epoch of the last Observation in the file.	Type: TimeSpan Access: Read-Only Units: day
DataSpanStartEpoch	The Epoch of the first Observation in the file.	Type: TimeSpan Access: Read-Only Units: day
DeclaredName	The name of the object as declared.	Type: String Access: Read-Only
DisplayName	The name displayed for this object in output windows such as views, plots, and reports.	Type: String Access: Read/Write
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
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 Sensor objects.	Type: Array of Sensor 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
UseObserverPosition	A flag indicating whether or not to read or write the position of the observing Sensor. Note: If you are reading in the position of the observing sensor the observer position must be given in km, in the ICRF.	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