Accession Number : ADA117691

Title :   Improving Conflict Alert Performance Using Moving Target Detector Data.

Descriptive Note : Final rept. Oct 79-Sep 80,


Personal Author(s) : Lefferts,Robert E

PDF Url : ADA117691

Report Date : Jun 1982

Pagination or Media Count : 85

Abstract : The feasibility of using measurements of aircraft radial velocity to improve the performance of the en route tracking algorithm in the present computational environment was examined. Radial velocity can be measured with equipment which is part of the Moving Target Detector (MTD) radar, a new type of search radar. Particular attention is paid in this report to the utilization of radial velocity in reducing speed and heading biases that occur during maneuvers. The performance of the tracking and Conflict Alert algorithms is evaluated on five maneuver detection/observation methods, including the present method. Using both standard and track-oriented parameters yields a total of ten different analyses. A simplified simulation program produces quantitative data. Because the computational resources available for tracking algorithm modifications are limited, consideration of possible applications of radial velocity measurements is restricted to simple algorithm changes. Two aspects of performance are measured: the warning time to a hazardous situation, and the nuisance alert area, a recently developed measure of the false alarm performance of the algorithms. It was concluded that the use of the radial velocity data was not justified in the present systems givent the limited computer resources available. The practically of using radial velocity data in the more extensive system of the future is briefly considered. (Author)

Descriptors :   *Moving target indicators, *Radar tracking, Algorithms, Search radar, Radial velocity, Air traffic control systems, Ground controlled approach radar

Subject Categories : Terminal Flight Facilities
      Air Navigation and Guidance
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE