Method of identifying a target as a friend of foe, and arrangeme

Details Method of identifying a target as a friend of foe, and arrangeme Method of identifying a target as a friend of foe, and arrangeme

1999-03-26

2000-10-31

Sotomayor, John B.

Computer graphics processing and selective visual display system

Plural physical display element control system

Segmented display elements

G09G 312

Patent

active

061409820

ABSTRACT:
The invention relates to a system for identifying targets as a friend or foe, which is operated in the millimeter-wavelength range by means of an interrogator and a transponder, with the interrogator and the transponder having essentially the same electronic assemblies and operating in essentially the same middle transmitting and receiving frequency, and with a large frequency difference between the two being tolerable. The interrogator operates with a directional transmitting/receiving antenna, whereas the transponder possesses an omnidirectional transmitting/receiving antenna.

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