Trk234File Object

Description

The Trk234File object provides functionality for reading DSN data from binary files written in the TRK-2-34 format. FreeFlyer extracts sequential range data (SRA), Total Count Phase (TCP) data, and frequency ramping data. FreeFlyer internally converts the ambiguous sequential range data (in Range Units) to DSNObservation.Range measurements (in km) and Total Count Phase (in counts) to DSNObservation.RangeRate measurements (in km/s) using the frequency ramp tables.

Inheritance Hierarchy: Object->TrackingDataFile->Trk234File

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 GroundStations.	Type: Array of GroundStation Access: Read-Only
RangeObservableToUse	Indicates which range observable to use. If this is set to uncorrected then the raw range (meas_rng) is used, and the calibrations / corrections are applied manually. Otherwise the corrected range observable (rng_obs) is used.	Type: Variable Access: Read/Write
UseDeltaFrequencyCorrection	Specifies whether to use the delta_ff field to correct the time-tag / integrated frequency.	Type: Variable Access: Read/Write
UseIonosphericCorrection	A flag indicating whether or not the Ionospheric 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
UseTroposphericCorrection	A flag indicating whether or not the Tropospheric correction will be used.	Type: Variable Access: Read/Write