Accession Number : AD0774790

Title :   Injection Laser Terrain Following System (ILTFS).

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Schiel,E. ; Gammarino,R. ; Kleider,A. ; Aras,E.

Report Date : FEB 1974

Pagination or Media Count : 27

Abstract : IDANCE, Navigational aids, Injection lasers, Low level, Performance(Engineering)Terrain followingA model has been developed of a subsystem designed to sense the trend of the terrain ahead of low flying rotary wing aircraft. This sensor subsystem, a forerunner of a terrain following system, incorporates a high peak power injection laser transmitter and an optical receiver with a high sensitivity silicon avalanche detector. In operation, the slant range from the aircraft to the terrain is continuously measured to sense terrain variations. Experimental data have confirmed the results of a performance analysis which indicates that the system is capable of determining the terrain trend at a horizontal range of 300 m along the aircraft flight vector under background limited conditions. (Author)

Descriptors :   *Helicopters, *Terrain avoidance, Navigational aids, Injection lasers, Low level, Performance(Engineering)

Subject Categories : Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE