Spatial Adaptive Pre-Suppession of Wideband Jammers in Conjunction with Stap

摘要

This report extends the original work described by Klemm and Marshall, pertaining to the cascaded (or two-step nulling) pre-suppression of WNJ's (Wideband Noise Jammers) in STAP based radar system. Two aspects of the cascaded SPATIAL ADAPTIVE PRE-SUPPRESSION (SAP)/STAP approach are addressed. (1) System architecture and its impact on detection performance, and (2) ASP algorithm development and the acquisition of clutter-free jammer secondary data. Several cascaded architectures have been proposed as an implementation of the SAPS concept. The performance results for these cascaded favorably with the simultaneous of the WNJ pre-suppression concept is the acquisition of jammer-only secondary data. The sideband technique described has the unique advantage over other techniques in that it allows collection of secondary data during any portion of an RPI. Sideband compensation methods were proposed and analyzed showing that ample jammer suppression can be achieved in the mainband while using the sideband secondary data for weight calculation.