Journal of Systems Engineering and Electronics ›› 2010, Vol. 21 ›› Issue (5): 752-758.doi: 10.3969/j.issn.1004-4132.2010.05.006

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Target location with signal fitting and sub-aperture tracking for airborne multi-channel radar

Zhiwei Yang1,*, Guisheng Liao1, Shun He1,2, and Cao Zeng1   

  1. 1. National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, P. R. China;
    2. Communication and Information Engineering College, Xi’an University of Science and Technology, Xi’an 710054, P. R. China
  • Online:2010-10-11 Published:2010-01-03

Abstract:

The location of a moving target based on signal fitting and sub-aperture tracking from an airborne multi-channel radar is dealt with. The proposed approach is applied in two steps: first, the ambiguous slant-range velocity is derived with a modified single-snapshot multiple direction of arrival estimation method, and second, the unambiguous slant-range velocity is found using a track-based criterion. The prominent advantage of the proposed approach is that the unambiguous slant-range velocity can be very large. Besides, the first stage is carried out at the determinate range-Doppler test cell by azimuth searching for fitting best to the moving target signal, therefore, the location performance would not be sacrificed in order to suppress clutter and/or interference. The effectiveness and efficiency of the proposed method are validated with a set of airborne experimental data.