Accession Number : AD0913494

Title :   Collision and Obstacle/Terrain Avoidance Warning System (COTAWS) Multifunction Sensor Study.

Descriptive Note : Supplement no. 2 to final rept. 28 Jan-27 Jul 72,

Corporate Author : UNITED TECHNOLOGIES CORP NORWALK CT NORDEN DIV

Personal Author(s) : McLeod, Daniel ; Sparacio, Joseph ; Pierro, Richard ; Skolnick, Michael ; Gurski, Gary

Report Date : AUG 1973

Pagination or Media Count : 236

Abstract : Norden, with the cooperation of the United Aircraft Research Laboratories, compared three microwave radars and one CO2 laser as obstacle detection radars. The test procedure, the data taken, and a discussion of the results of these comparative tests is provided in this report. The microwave radars included one Ku-band amplitude monopulse radar, one Ku-band phase interferometer radar, and one millimeter (70 GHz) radar. The laser was pulsed coherent CO2 laser radar. The obstacles included wires, poles, towers, buildings, and other hazards to low-level flight. The CO2 laser radar detected all hazards to low-level flight including Army field wire at up to 60 deg off normal to the laser radiation. The millimeter radar could detect most hazards to low-level flight but could not provide the same wire detection capability as the laser. The Ku-band radars provided detection of only the large obstacles such as buildings and large towers. (Author)

Descriptors :   *MONOPULSE RADAR), *NAVIGATIONAL AIDS), (*TERRAIN AVOIDANCE, (*AVIATION SAFETY, (*GAS LASERS, TERRAIN AVOIDANCE), OPTICAL RADAR, WARNING SYSTEMS, CARBON DIOXIDE, K BAND, INTERFEROMETERS, LOW ALTITUDE, HAZARDS, TRANSMISSION LINES, WIRE, MILLIMETER WAVES, V BAND, DETECTORS.

Subject Categories : Lasers and Masers
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE