Journal of Systems Engineering and Electronics ›› 2012, Vol. 23 ›› Issue (6): 875-880.doi: 10.1109/JSEE.2012.00107

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Pre-processing for time domain image formation in SS-BSAR system

Hong Zhou1, *, Michail Antoniou2, Zhangfan Zeng2, Rui Zuo3, Huaiying Tan1, Jianming Guo1, and Mikhail Cherniakov2   

  1. 1. Beijing Radar Research Institute, Beijing 100085, P. R. China;
    2. School of Electronic, Electrical and Computer Engineering, University of Birmingham, Birmingham B15 2TT, UK;
    3. ST Ericsson, Daventry NN11 8YL, UK
  • Online:2012-12-24 Published:2010-01-03


A pre-processing procedure is designed for a spacesurface bistatic synthetic aperture radar (SS-BSAR) system when a time domain image formation algorithm is employed. Three crucial technical issues relating to the procedure are fully discussed. Firstly, unlike image formation algorithms operating in the frequency domain, a time domain algorithm requires the accurate global navigation satellite system (GNSS) time and position. This paper proposes acquisition of this information using a time-and-spatial transfer with precise ephemeris and interpolation. Secondly, synchronization errors and compensation methods in SS-BSAR are analyzed. Finally, taking the non-ideal factors in the echo and the compatibility of image formation algorithms into account, a matched filter based on the minimum delay is constructed. Experimental result using real data suggest the pre-processing is functioning properly.