Flight Evaluation Trials Of A Heterodyne CO2 Laser Radar

Bernard Stephan; Philippe Metivier

doi:10.1117/12.941404

24 August 1987 Flight Evaluation Trials Of A Heterodyne CO₂ Laser Radar

Bernard Stephan, Philippe Metivier

Proceedings Volume 0806, Active Infrared Systems and Technology; (1987) https://doi.org/10.1117/12.941404
Event: Fourth International Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, The Hague, Netherlands

Abstract

Since 1982, SFENA has been developing a FM-CW Laser Radar first designed for terrain-following and terrain-avoidance of combat aircraft. In order to prove the effectiveness of this concept, a compact experimental engineering model of the sensor underwent flight evaluation trials on a PUMA helicopter at the French Flight Test Center in 1985. Altimetric data of the terrain flown over by the aircraft were acquired and batch proces-sed, allowing the creation of 10 x 10 kilometer altimetric maps centered on the aircraft and divided into 40 meter square elementary cells. The altimetric files were processed in various ways : 3-D projections, extraction of altimetric profiles, production of level contours. They were compared with various references such as DLMS data files, radio-altimeter profiles and geographical maps. The results are presented according to two types of analysis : - visual correlation between 3-D projections, - standard-deviation between laser radar and radio-altimeter profiles. Some other in-flight performances such as : probability of detection on typical obstacles, false alarm levels, scanning influence on detection, are also discussed.

Citation Download Citation

Bernard Stephan and Philippe Metivier "Flight Evaluation Trials Of A Heterodyne CO₂ Laser Radar", Proc. SPIE 0806, Active Infrared Systems and Technology, (24 August 1987); https://doi.org/10.1117/12.941404

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