Helicopter obstacle detector

Details Helicopter obstacle detector Helicopter obstacle detector

1985-04-04

1988-04-12

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Aircraft collision avoidance system

342 94, 342159, G01S 1393

Patent

active

047377887

ABSTRACT:
A pulsed Doppler radar mounted adjacent to the tip of a helicopter rotor blade for sensing obstacles in the helicopter path. The rotor tip velocity shifts the frequency of radar echos so that, through pulsed Doppler radar techniques, the echos from obstacles can be separated from clutter.

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M. Skolnik, Radar Handbook, pp. 19-3; (McGraw-Hill, 1970).

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