Integrated Doppler Correction to TWSTFT Using Round-Trip Measurement

Abstract

Diurnal variation is one of the significant instabilities in Two-Way Satellite Time and Frequency Transfer (TWSTFT) data. It is necessary to correct the diurnal variation for comparing the time-scale difference. We focus on the up-/downlink delay difference caused by satellite motion. In this paper, we propose to correct the TWSTFT data by using round-trip delay measurement. There are four laboratories: the National Institute of Information and Communications (NICT), Korea Research Institute of Standards and Science (KRISS), the National Time Service Center (NTSC), and TL, who join the TWSTFT network by using the NICT modem. Moreover, TL and NICT are continuing the DPN experiment. In the end, we investigate these TWSTFT data and the corrected data are performed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2010
Accession Number
ADA639366

Entities

People

  • Shinn-yan Lin
  • Wen-hung Tseng
  • Yi-jiun Huang

Tags

DTIC Thesaurus Topics

  • Artificial Satellites
  • Communication Systems
  • Diurnal Variations
  • Doppler Effect
  • Downlinks
  • Electronic Mail
  • Frequency
  • Geosynchronous Orbits
  • Geosynchronous Satellites
  • Instability
  • Intervals
  • Measurement
  • Radio Communications
  • Satellite Communications
  • Standards
  • Time Interval Counters
  • Time Intervals

Fields of Study

  • Environmental science

Readers

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

Technology Areas

  • Space