Evolution of the orbital improvement program
Abstract
The Orbital Improvement Program (OIP) is a massive computer program that determines and predicts orbits for the Navy Navigation Satellite System (Transit system). The system became operational in 1963 and has played a vital part in providing all-weather navigation to worldwide users. The system has been continuously updated and improved. Today, navigation results are regularly under 10 m for operational satellites, providing accuracy far beyond any expectations of the early 1960's. This report describes the evolution of the program, its operational history, and how it has improved naviation accuracy.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1979
- Bibcode:
- 1979STIN...8019143D
- Keywords:
-
- Computer Programs;
- Doppler Navigation;
- Navigation Aids;
- Geodesy;
- Geopotential;
- Gravitational Fields;
- Ground Stations;
- Navigation Satellites;
- Astrodynamics