Instrument Landing System Improvement Program: Far-Field Monitoring.

Abstract

Methods of far-field extrapolation monitoring of the ILS glide slope angle are investigated. The use of a quasilinearization algorithm to determine path angle and width from measurements below obstruction heights at the middle marker is described with results for various fault conditions tabulated. A precision space modulation quotient monitor (SMQ) for measuring high values of DDM at low signal levels is described. A description of investigations of a field strength monitor using the capture effect principle to sense changes in low altitude field strength caused by environmental effects is included. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1975
Accession Number
ADA042320

Entities

Organizations

  • Ohio University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Automatic Frequency Control
  • Automatic Gain Control
  • Computational Science
  • Computer Programs
  • Computers
  • Converters
  • Course Deviation Indicators
  • Difference Frequency
  • Electronic Equipment
  • Engineering
  • Far Field
  • Field Tests
  • Frequency
  • Glide Slope
  • Measurement
  • Plastic Explosives
  • Transmitters

Fields of Study

  • Physics

Readers

  • Aerospace Test and Evaluation
  • Aviation Safety and Air Traffic Management
  • Spectroscopy.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster