Derivation of Groundspeed Information from Airborne Distance Measuring Equipment (DME) Interrogators.

Abstract

Laboratory and flight tests were conducted to investigate the derivation of aircraft groundspeed from the range rate pulse information obtained from ARINC 568 distance measuring equipment (DME) interrogators. Initial tests determined the limitation of the range rate pulse output from the two interrogaters tested. Subsequent effort was directed toward digital filtering techniques to improve accuracy and response time of the DME-derived groundspeed. Best results were obtained with either accelerometer complementation or Kalman filtering with velocity and acceleration observations. Both techniques achieved standard deviations of about 3 knots when compared to Inertial Navigation System (INS) groundspeed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1977
Accession Number
ADA049277

Entities

People

  • John Gallagher
  • Robert H. Pursel
  • William Lynn

Tags

Communities of Interest

  • Air Platforms
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Computers
  • Digital Data
  • Distance Measuring Equipment
  • Estimators
  • Filters
  • Filtration
  • Frequency
  • Ground Speed
  • Inertial Navigation
  • Inertial Navigation Systems
  • Kalman Filtering
  • Kalman Filters
  • Laboratory Tests
  • Measurement
  • Navigation
  • Test And Evaluation

Readers

  • Aerospace Test and Evaluation
  • Approximation Theory.
  • Inertial Navigation Systems.