An NNSS Satellite Timing Receiver

Abstract

The U.S. Navy Navigation Satellite System termed as NNSS offers a unique worldwide facility for the precise Time Synchronisation. To take advantage of such a facility for tracking Indian Satellites, Space Applications Centre (SAC) has developed a simple Timing Receiver. Using this Timing Receiver, first the internal time consistency of NNSS was studied and then its performance to synchronise time was compared with that of National Time Standard. This paper describes in detail the methodology of data analysis, results and the various sources of error which affects the time transfer accuracy. The main source of error was found to be the receiver delay which varies with signal strength. It is possible to apply this delay correction empirically provided signal strength is recorded.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1981
Accession Number
ADA497649

Entities

People

  • A. K. Sisodia
  • C. L. Jain
  • H. I. Andharia
  • K. Kumar
  • Mohan Singh
  • V. D'souza
  • V. K. Goel

Organizations

  • Indian Space Research Organisation

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Atomic Clocks
  • Clocks
  • Consistency
  • Coordinate Systems
  • Data Analysis
  • Errors
  • Ground Stations
  • Information Operations
  • Microsecond Time
  • Navigation Satellites
  • Remote Sensing
  • Slant Range
  • Standards
  • Time Intervals
  • Time Standards

Readers

  • Computational Modeling and Simulation
  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space