Disciplined Rubidium Oscillator with GPS Selective Availability

Abstract

A U.S. Department of Defense decision for continuous implementation of GPS Selective Availability (S/A) has made it necessary to modify Rubidium oscillator disciplining methods. One such method for reducing the effects of S/A on the oscillator disciplining process has been developed which achieves results approaching pre-S/A GPS. This paper describes the Satellite Hopping algorithm used in minimizing the effects of S/A on the oscillator disciplining process, and compares the results of using this process to those obtained prior to the implementation of S/A. Test results are from a TrueTime Rubidium based Model GPS-DC timing receiver.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1992
Accession Number
ADA494569

Entities

People

  • Wayne P. Dewey

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Algorithms
  • Availability
  • Calculators
  • Clocks
  • Control Systems
  • Converters
  • Electronic Equipment
  • Elements
  • Engineering
  • Errors
  • Frequency
  • Information Operations
  • Oscillators
  • Rubidium
  • Time Intervals

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space