The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1998
Filed:
Jan. 10, 1997
Lester Kosowsky, Stamford, CT (US);
Edward Stockburger, Norwood, MA (US);
Kevin W Lindell, Trumbull, CT (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
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.