Accession Number:

ADA517461

Title:

Effect of Bandwidth on Wideband-Stap Performance (Preprint)

Descriptive Note:

Conference paper preprint 25 May 2006-19 Oct 2007

Corporate Author:

C AND P TECHNOLOGIES INC CLOSTER NJ

Report Date:

2007-10-01

Pagination or Media Count:

6.0

Abstract:

A wideband signal occupies a finite bandwidth that is significant compared to its carrier frequency. As a result, when transmitted, its returns cause bandwidth dispersion across the antenna. It is shown here that the effect of the finite bandwidth is to introduce a set of uncorrelated return signals for every physical scatter in the field. Further, each such uncorrelated return contains a set of coherent signals with different directional and Doppler components that result from a jittering effect both in angle and Doppler domain. As a result, adaptive clutter cancellation using traditional processing schemes does not work well. Although in principle it is possible to correct these decorrelating effects by 3D spacetime adaptive processing STAP, the present day methods are quite costly and difficult to implement. In addition to the new wide band signal modeling framework mentioned above, we outline a hierarchical processing scheme which has the potential for dramatically reducing both processing and sample support burdens.

Subject Categories:

  • Electrical and Electronic Equipment
  • Miscellaneous Detection and Detectors
  • Radiofrequency Wave Propagation
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE