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International Journal of Antennas and Propagation
Volume 2014, Article ID 452141, 8 pages
Research Article

Joint Two-Dimensional Ambiguity Resolving Based on Space-Time Filtering for MIMO-SAR

1College of Information Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
2The National Key Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Received 16 March 2014; Revised 17 June 2014; Accepted 1 July 2014; Published 12 August 2014

Academic Editor: Shengqi Zhu

Copyright © 2014 Ping-ping Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In order to resolve the range and azimuth ambiguity in MIMO-SAR imaging, this paper proposed a joint two-dimensional ambiguity resolving method based on space-time filtering, which according to the ambiguity in different subscene is relative to different nearest echo range, and different azimuth time is relative to different instantaneous incidence angle, to make two-dimensional space-time steering vector for resolving ambiguity of the echo, which also can finish the imaging processing at the same time. Simulation results validate the proposed processing approach for the MIMO-SAR system.