DMA (Defense Mapping Agency) Orbit Determination for Transit Satellites: 1985.

Abstract

Since 1975, the Defense Mapping Agency (DMA) has been computing precise orbits for the Navy navigation satellites, OSCAR series. In mid-1981, DMA began computing precise orbits for the NOVA-1 satellite and, in early 1985, for the NOVA-3 satellite. Currently, DMA determines precise orbits for the three OSCAR and two NOVA satellites which comprise the TRANSIT System. This paper presents a comparison of computational results for these satellites with regard to orbit accuracy, time (oscillator) stability, and polar motion. The comparison is made for results obtained for 1985. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1986
Accession Number
ADA167567

Entities

People

  • Jesse K. Murphy
  • Patrick J. Fell

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Classification
  • Computations
  • Consistency
  • Coordinate Systems
  • Crystal Oscillators
  • Data Processing
  • Ephemerides
  • Frequency
  • Navigation
  • Navigation Satellites
  • Observation
  • Oscillators
  • Satellite Orbits
  • Security
  • Tracking Stations

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Geodesy
  • Space Exploration and Orbital Mechanics.

Technology Areas

  • Space
  • Space - Orbital Debris
  • Space - Satellites