A Rotor for Testing the Dynamic Performance of GPS Receivers

Abstract

Evaluation of GPS User Equipment (UE) requires that a measurement be made of the error in reported position in order to gauge the performance, both static and dynamic, of the UE against the manufacturer's claims and US DoD specifications. Static error can be measured by placing the antenna of a GPS receiver over a survey point. However, it is also necessary to determine errors which may be dependent upon velocity, acceleration and higher derivatives. A rotor has been constructed to aid in the evaluation of GPS receivers. The rotor has a ten metre arm with a mounting for a GPS antenna at the end of the arm. Angular velocity can be controlled from 0.5 to 30 rpm continuously. The GPS antenna is mounted on the end of the rotor arm and signals are taken to the base of the radar mount via a rotary RF joint and a length of low loss Prodelin cable.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1991
Accession Number
ADA264074

Entities

People

  • G. Fielke
  • J. Silby

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Australia
  • Cables
  • Computer Programs
  • Computers
  • Control Systems
  • Converters
  • Crystal Oscillators
  • Department Of Defense
  • Engineering
  • Errors
  • Frequency
  • Global Positioning Systems
  • Induction Motors
  • Measurement
  • Rotation
  • Standards
  • Test And Evaluation

Readers

  • Aerodynamics.
  • Control Systems Engineering.
  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers