Accession Number : AD0907978

Title :   Low Cost Air Traffic Control Experiment.

Descriptive Note : Final technical rept. 1 Jul 71-31 Aug 72,

Corporate Author : HAZELTINE CORP GREENLAWN NY

Personal Author(s) : Crush, J. F. ; Muller, W. G.

Report Date : FEB 1973

Pagination or Media Count : 73

Abstract : This report describes the first phase of an Air Force program to provide for the integration of existing equipments for flight testing and experimental evaluation of a simplified air surveillance tracking and collision avoidance system. The results to be derived from the flight tests are intended to demonstrate the feasibility of a Low Cost Air Traffic Control (LCTC) System for airborne vehicles. The technique used in this basic system for air surveillance is based on time difference principles. The position of each aircraft is determined at the master terminal by measuring the relative time difference of an asynchronous, pseudo-noise coded, short-burst transmission, emitted by the aircraft as received at each of three sites. The coded signals are matched filter processed and relayed to the master terminal where the necessary computations are performed. The coded transmission from each aircraft includes a unique identification code as well as air-derived altitude data. The system equipment includes: spread spectrum, L-Band, down link transmitters/receivers; lumped constant and acoustic surface wave matched filter processors; and narrowband, UHF, up link transmitters/receivers. (Author)

Descriptors :   (*AIR TRAFFIC CONTROL SYSTEMS, COSTS), (*RADAR BEACONS, IDENTIFICATION SYSTEMS), TRANSPONDERS, RADAR RECEIVERS, RADAR TRANSMITTERS, NOISE, CODING, MATCHED FILTERS, COMPUTER PROGRAMS, REAL TIME, DATA PROCESSING, AVIATION ACCIDENTS, L BAND, NARROWBAND, ULTRAHIGH FREQUENCY.

Subject Categories : Aircraft
      Air Navigation and Guidance
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE