Accession Number : AD0756843

Title :   The Use of Supplementary Receivers for Enhanced Positional Accuracy in the DAB System.

Descriptive Note : Technical note,

Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s) : Kelly,E. J.

Report Date : 04 DEC 1972

Pagination or Media Count : 87

Abstract : The report is an analysis of the performance of two general schemes which might be used to obtain enhanced accuracy of aircraft position determination in the DAB system. Both schemes use supplementary receivers to detect DABS replies, permitting multilateration or hyperbolic position finding, while differing in the way bistatic path lengths are measured. Detailed derivations and theoretical numerical results are presented. (Author)

Descriptors :   (*RADIO BEACONS, *POSITION FINDING), (*AIR TRAFFIC CONTROL SYSTEMS, RADIO BEACONS), TRANSPONDERS, DETECTORS, ACCURACY, LEAST SQUARES METHOD, NUMERICAL ANALYSIS

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE