Accession Number : AD0771207

Title :   Development of a Discrete Address Beacon System.

Descriptive Note : Quarterly technical summary 1 Jul-30 Sep 73.

Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Report Date : 01 OCT 1973

Pagination or Media Count : 60

Abstract : The report includes: a discussion of recent Discrete Address Beacon Systems downlink preamble and modulation studies; a review of link performance studies to assess the effects of various types of signal fades, the merits of transmitted power programming, and diversity, and to establish link performance criteria. A brief description of operational problems peculiar to the DABS/Military interface is also included. Other items detail progress made in coverage studies and in the formulation of a sensor deployment plan. Sensor design is discussed under headings of antenna studies, reply processing, interrogation management, tracker studies, and DABS use of radar data. A description of the development status of the DABS experimental facility and a review of initial direction-finding experiments performed conclude the report. (Modified author abstract)

Descriptors :   *Air traffic control systems, *Radar beacons, *Data links, Transponders, Detectors, Antennas, Signal processing, Performance(Engineering)

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE