Communications: directive radio wave systems and devices (e.g. – Radar transponder system – Iff or sif
Patent
1997-01-10
1998-06-16
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
Iff or sif
342 25, G01S 1378, G01S 1390
Patent
active
057678022
ABSTRACT:
An IFF system including an interferometric ultra-high resolution synthetic aperture (SAR) radar located on an aircraft and a respective transponder located on one or more ground targets which may be, for example, ground vehicles. Each transponder is responsive to RF pulses transmitted from the radar and includes means for generating an identification code which then modulates the radar return with a coded signal indicative of the target's identity. Upon receiving the signal from the transponder, the radar processes the signals in an interferometric moving target focusing (IMTF) mode and a high resolution SAR processing mode to provide signals indicative of both moving and fixed targets with ID data superimposed thereon. Target ID extraction apparatus also having the same identification code applied thereto is included in the radar signal processor and extracts the target ID by a correlation technique which is then displayed along with the radar image of the target in question.
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Kosowsky Lester
Lindell Kevin W.
Stockburger Edward
Northrop Grumman Corporation
Sotomayor John B.
Sutcliff Walter G.
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