High-resolution imaging using a wideband MIMO radar system with two distributed arrays

Authors:
Dang-wei Wang;Xiao-yan Ma;A.-Lei Chen;Yi Su
Affiliations:
Department of information and Command Automation, Wuhan Radar Academy, Wuhan, China;Department of information and Command Automation, Wuhan Radar Academy, Wuhan, China;Department of information and Command Automation, Wuhan Radar Academy, Wuhan, China;School of Electronic Science and Engineering, National University of Defense Technology, Changsha, China
Venue:
IEEE Transactions on Image Processing
Year:
2010

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Abstract

Imaging a fast maneuvering target has been an active research area in past decades. Usually, an array antenna with multiple elements is implemented to avoid the motion compensations involved in the Inverse synthetic aperture radar (ISAR) imaging. Nevertheless, there is a price dilemma due to the high level of hardware complexity compared to complex algorithm implemented in the ISAR imaging system with only one antenna. In this paper, a wideband multiple-input multiple-output (MIMO) radar system with two distributed arrays is proposed to reduce the hardware complexity of the system. Furthermore, the system model, the equivalent array production method and the imaging procedure are presented. As compared with the classical real aperture radar (RAR) imaging system, there is a very important contribution in our method that the lower hardware complexity can be involved in the imaging system since many additive virtual array elements can be obtained. Numerical simulations are provided for testing our system and imaging method.