Accession Number:

AD0742301

Title:

Determination of Earth Satellite Orbits

Descriptive Note:

Technical note

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

Report Date:

1972-04-19

Pagination or Media Count:

272.0

Abstract:

The formulas used in a computer program to fit earth satellite orbits to data are documented. The areas covered are 1 iterative method of determining maximum likelihood parameter estimates 2 units are coordinate systems 3 motion of the earth about its center of mass 4 equations for earth satellite motion and partial derivatives of this motion with respect to parameters 5 theoretical values and partial derivatives of theoretical values of ground based radar or radio transponder, look angles, long baseline interferometer and satellite based radar, look angles observables and 6 numerical techniques such as numerical integration, polynomial interpolation and matrix inversion. Observations of the sun, moon, planets and stars are also discussed.

Subject Categories:

  • Celestial Mechanics
  • Spacecraft Trajectories and Reentry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE