Accession Number:

ADA109503

Title:

Test Plan for SSR Antenna Rotation Rate Stabilization.

Descriptive Note:

Final rept.,

Corporate Author:

TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MA

Personal Author(s):

Report Date:

1981-10-01

Pagination or Media Count:

143.0

Abstract:

A comprehensive test plan is presented to evaluate the impact of wind and ice loading on the rotation rate stability of a Secondary Surveillance Radar SSR antenna used for air traffic control surveillance. Antenna rotation rate variations may introduce errors in the estimate of a position of an intruding aircraft in a passive collision avoidance system used in conjunction with the SSR antenna. The test plan provides a method for determining the statistics of the antenna rotation rate variations. Analytical methods are then presented to assess the effects on CAS performance. The measurement system design, mathematical model development of the antenna system, test data reduction, and analysis programs are presented in detail. Sample calculations of preliminary field data are given and compared with the results obtained from computer simulations. The computer simulations are also intended to predict antenna rotation rate variations at the upper limits of the FAA specified range, which were not generally encountered during normal operations. Author

Subject Categories:

  • Air Navigation and Guidance
  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE