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Range-Dependent Clutter Suppression for Airborne Sidelooking Radar using MIMO Technique

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4 Author(s)
Jianxin Wu ; Nat. Lab. of Radar Signal Process., Xidian Univ., Xi''an, China ; Tong Wang ; Lifeng Zhang ; Zheng Bao

Range-dependent clutter suppression is an important issue in airborne bistatic radar moving target detection. Range-dependent clutter suppression using the multiple-input multiple-output (MIMO) technique is investigated. By employing the MIMO technique, the clutter ridges of all range bins are located in the same plane of the three-dimensional (3D) space. Moreover as long as the sum of the target radial velocities relative to the transmitter and the receiver is unequal to zero, the target will not be located in this plane. Thus clutter suppression can be realized by a 3D linear constrained minimum variance (LCMV) filter. In high clutter-to-noise (CNR) cases, the presented technique yields better performance than the conventional bistatic sidelooking phased-array radar. Numerical examples are given to demonstrate the effectiveness of the presented technique.

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Aerospace and Electronic Systems, IEEE Transactions on  (Volume:48 ,  Issue: 4 )