Tracking Data

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When working with FreeFlyer's Orbit Determination system, there are several types of tracking data that can be used. These are shown in the table below, along with the corresponding file types that can be read natively by FreeFlyer:

Observation Type	Native File Formats
BRTS Observations	BRTS UTDF File
Custom Observations	User-Specified
DSN Observations	DSN 60-Byte Observation File TRK-2-34 File
GNSS Observations	Rinex Observation File
Ground Station Observations	FF Ground Observation File UTDF File
Point Solution Observations	BlackJack Point Solution File GPS Pivot Point Solution File
Spacecraft Observations	Spacecraft Observation File
TDRS Observations	TDRS UTDF File

If you have access to any of these observation types in a file format not listed above, you can use FreeFlyer script to parse the data.

We will discuss the following topics related to tracking data:

•Observations and Measurements

•Tracking Data File Formats

•Simulating Tracking Data

•Generating Tracking Data Files

•Using the Tracking Data Editor

For information on using tracking data, see the Including Tracking Data in an Estimation Process page.