J4 ›› 2011, Vol. 38 ›› Issue (4): 129-132+142.doi: 10.3969/j.issn.1001-2400.2011.04.023

• Original Articles • Previous Articles     Next Articles

Radial velocity estimation for the extended moving target  with distributed space-borne SAR

HE Shun1,2;YANG Zhiwei1;XU Qing1;ZHANG Juan1   

  1. (1. National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China;
    2. Comm. and Info. Eng. Collage, Xi'an Univ. of Sci. and Tech., Xi'an  710054, China)
  • Received:2010-05-24 Online:2011-08-20 Published:2011-09-28
  • Contact: HE Shun E-mail:heshun-1212@163.com

Abstract:

This paper describes a new radial velocity estimation method for the extended moving target of low signal-to-clutter ratio with the distributed space-borne SAR system. By velocity searching for one fitting best to the under-test signal, a fine estimation of target radial velocity can be achieved. The estimation performance would not be sacrificed in order to suppress clutter and/or interference and the high resolution radial velocity estimation can be achieved. A preliminary result against space-borne simulation data demonstrates the effectiveness of the proposed method.

Key words: distributed space-borne SAR, ground moving target indication, extended target, adaptive match filtering