ODTK Application Technical Manuals
Follow the links below to printable documentation in PDF format for specific technical explanations for aspects of the Ansys Orbit Determination Tool Kit (ODTK®) application .
ODTK Processing Applied to GNSS Satellite Orbits and Clocks
This is an overview of and guide to the application of ODTK processing to orbit and clock estimation in support of operations of GNSS satellite systems.
Plugin Programming Guide
This is a guide that provides step-by-step instructions on how to write plugins for the ODTK application. The guide provides a high-level overview of the ODTK application plugin architecture and concepts common between plugin points.
Effective Use of Gooding IOD
This is a guide to Initial Orbit Determination using the Gooding Angles Only method, including mathematical background.
Clock Coefficients from Allan Variance Diagram
This is a description of a method of deriving crystal clock values of a0 and a-2 from an Allan Variance Diagram.
GPS Range and Range Difference Sigmas
These are equations for calculating the white-noise sigma value to be used in the ODTK software's sequential filter for range difference white noise, plus a short discussion of the use and derivation of a sigma value on the original range white-noise sequence.
OD Comparison
This is a recommended method for comparing the results of ODTK processing with those of your current OD procedures.
Achieving Astrodynamics Consistency with STK and ODTK Applications
This is a guide to configuring Ansys Systems Tool Kit® (STK®) and ODTK applications for computational consistency, addressing two main areas of concern: Earth-centered coordinate transformations and orbit propagation.
ODTK Application GPS ISC File Description
This provides a detailed description of the ISC file.
GNSS Measurement Types
This lists the single-frequency measurements, dual-frequency measurements, single-differenced measurements, double-differenced measurements, and triple-frequency measurements supported by the ODTK application.
Deep-space Orbit Determination with the ODTK Application
This describes some of the nuances associated with using the ODTK application to perform orbit determination and orbit determination studies for deep-space missions.