APPROACH TO SATELLITE EPHEMERIS DETERMINATION FOR THE NAVSTAR GLOBAL POSITIONING SYSTEM

The NAV-STAR Global Positioning System (GPS) is the satellite navigation system of the future. It is now in the development stage of its validation phase. Precise estimation and prediction of navigation satellite emphemerides and frequency standard characteristics are essential to projected user navigation accuracy. This paper presents the approach being implemented to achieve that accuracy. The approach blends the successful batch estimation technique (CLEST) developed by the Naval Surface Weapons Center with an on-line Kalman estimation technique to be implemented at the GPS Master Control Station (MSC). Both techniques use the same precisely measured and smoothed pseudo-ranging data collected by geometrically spaced Monitor Stations (MS) located at Hawaii; Elmendorf AFB, Alaska; Guam; and Vandenberg AFB, California.

• Availability:
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• Corporate Authors:

  Institute of Navigation

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• Authors:
  • van Dierendonck, A J
  • Melton, W C
  • Birnbaum, M
  • Harkins, M D
• Publication Date: 1976-3

Media Info

• Features: Photos;
• Pagination: p. 76-86
• Serial:
  • Navigation: journal of the Institute of Navigation
  • Volume: 23
  • Issue Number: 1
  • Publisher: Institute of Navigation
  • ISSN: 0028-1522
  • Serial URL: http://www.ion.org/newsletter/

Subject/Index Terms

• TRT Terms: Navigation computers; Navigation systems; Navigational satellites; Satellite navigation systems
• Old TRIS Terms: Computer aided navigation; Navigation systems development
• Subject Areas: Marine Transportation; Operations and Traffic Management;

Filing Info

• Accession Number: 00152005
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Apr 27 1977 12:00AM