Delay Stability of the TWSTFT Earth Station at VSL

Abstract

Frequency and time transfer methods rely on the stability of the propagation time of the signals through the systems involved. For TWSTFT the stability of the delays encountered in the earth station by the transmission of the local 1 PPS signals well as that of the received remote 1 PPS signal, determines the uncertainty at sub-nanosecond level for such transfers. The characteristics of the TWSTFT earth station at NMi Van Swinden Laboratorium (VSL) based on data accumulated with its automated delay measurement system during about one year are presented and discussed in more detail. Delay stabilities TDEV of 100 ps for tau = 1 h to 50 d are obtained, and frequency stabilities ADEV of 2.2 E-15 for tau = 1 d.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1997
Accession Number
ADA511027

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  • Gerrit De Jong

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  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Artificial Satellites
  • Calibration
  • Clocks
  • Converters
  • Difference Frequency
  • Frequency
  • Generators
  • Information Operations
  • Intervals
  • Ku Band
  • Measurement
  • Simulators
  • Sine Waves
  • Time Intervals
  • Transfer Switches

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  • Positioning, Navigation, and Timing (PNT) Technology.