Spacecraft Observations

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The Spacecraft Observation represents an observation of one spacecraft from another spacecraft. The measurement types available for these observations are:



Range Rate



Right Ascension



When working with Spacecraft Observations, you have the option to include the following corrections:


Ionospheric Correction

Light Time Correction


The ionospheric correction calculation relies on the FF_SolarSystem.IonosphereOptions.ScaleFactor property, which can be configured to scale the ionospheric correction values differently for simulating vs. processing. The spacecraft transponder frequencies are also used in computing the ionospheric corrections.


The following tracking data formats supported by FreeFlyer can contain Spacecraft Observations:


Spacecraft Observation Files


For more information on creating simulated Spacecraft Observations, see the Simulating Tracking Data page.



See Also

SpacecraftObservation Properties and Methods