Optimal Linear Array Tradeoff for Configuration and DOF MIMO-SAR  

作　　者：WANG Libao XU Jia PENG Shibao YUAN Junquan MA Xiaoyan 

机构地区：[1]Radar Academy of Air Force, Wuhan 410010, China [2]School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China [3]Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Journal of Electronics》2011年第2期380-384,共5页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.60971087）, China Aerospace Innovation Foundation （No.CASC200904）, China Aviation Science Foundation （No.20080158001）, China Ministry Research Foundation （No.9140A07011810JW0111） and Aerospace Supporting Foundation （No.J04-2007047）.

摘　　要：Due to the high system Degrees of freedom （DOF） by utilizing the multiple transmitting elements and receiving elements, MIMO-SAR can improve the performance of static scene imaging and Ground moving target indication （GMTI）, simultaneously. To realize the above multifunctional design, the optimal linear array configuration is given for MIMO-SAR in this paper at first. Furthermore, the DOF tradeoff schemes are proposed for static scene imaging and GMTI. Meanwhile, it is shown that the tradeoff between azimuth high-resolution and wide-swath can be solved by MIMO-SAR more effectively than the existing Multiple phase centers SAR （MPC-SAR）. The proposed four propositions and numerical experimental results are provided to demonstrate the effectiveness of MIMO- SAR.

关 键 词：SAR （Synthetic aperture radar） based MIMO （MIMO-SAR） Degrees of freedom （DOF） Highresolution Wide-swath. 

分 类 号：TN929.5[电子电信—通信与信息系统] TP722.6[电子电信—信息与通信工程]