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.

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    Institute of Navigation

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

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