Measurement of Group Delay at ns Level Precision in Exterior Ballistic Measurements,

Abstract

The importance of making use of GPS measurement systems to carry out external measurement track determinations is briefly described. Test measurement levels which have been reached inside and outside China are elucidated as well as problems which exist. pulse modulation and demodulation technologies to effectively resolve test measurement accuracies are put forward. Opting for the use of time interval measurements in place of phase measurements, it is possible to effectively make systems with the same frequencies and different frequencies attain ns level group time delay measurement precisions and it is possible to help in resolving GPS system zero correction difficulties.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1996
Accession Number
ADA310013

Entities

People

  • Jian Luo
  • Luo Bixian

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Amplifiers
  • Amplitude Modulation
  • Analyzers
  • Delay Lines
  • Demodulation
  • Detectors
  • Frequency
  • Frequency Shift
  • Global Positioning Systems
  • Measurement
  • Modulation
  • Phase Measurement
  • Phase Shift
  • Standards
  • Telemetry
  • Time Intervals

Fields of Study

  • Physics

Readers

  • Positioning, Navigation, and Timing (PNT) Technology.
  • Systems Analysis and Design

Technology Areas

  • Space