Investigation of Transponder Reply Fade-Out in the Vicinity of Chicago O'Hare Airport.

Abstract

Exploratory flight tests were performed approximately 11 nmi south of the Chicago O'Hare ASR-4 Radar Beacon Site to determine why transponder replies were being lost in this area. The report presents a summary of the type of tests that were conducted and the results of each test. Analysis of the flight test data showed that the major cause of the coverage problem centered around the towers of the Remote Transmitter Site No. 1 and propagation vertical lobing. It was concluded that confirmation flight tests should be performed by the FAA Chicago Area Office prior to any site modifications. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1970
Accession Number
AD0716944

Entities

People

  • George F. Spingler

Tags

DTIC Thesaurus Topics

  • Beacons
  • Communication Equipment
  • Navigational Aids
  • Navigational Equipment
  • Radar
  • Radar Beacons
  • Radar Components
  • Radar Equipment
  • Radar Transmitters
  • Radio Equipment
  • Radio Transmitters
  • Transmitters
  • Transponders

Readers

  • Aerospace Test and Evaluation
  • Environmental Remediation and Restoration.
  • Radar Systems Engineering.