Distributed multiple-input-multiple-output radar waveform and mismatched filter design with expanded mainlobe

作者：Xu, Leilei; Zhou, Shenghua^*; Liu, Hongwei; Zang, Huikai; Ma, Lin

来源：IET Radar Sonar and Navigation, 2018, 12(2): 227-238.

DOI：10.1049/iet-rsn.2017.0340

• MIMO radar
• radar signal processing
• filtering theory
• minimisation
• minimax techniques
• concave programming
• convex programming
• radar antennas
• antenna arrays
• distributed multiple-input-multiple-output radar waveform
• mismatched filter design
• expanded mainlobe
• nearly orthogonal waveforms
• constant-modulus requirement
• sidelobe level suppression
• phase-coded waveforms-with-expanded mainlobes
• OPCWEM
• minimisation criterion to
• nonconvex optimisation problem
• least-pth minimax algorithm

Distributed multiple-input-multiple-output radar usually needs to transmit nearly orthogonal waveforms, but the constant-modulus requirement from engineering applications often makes sidelobe levels difficult to suppress. In this study, the authors resort<?show [AQ ID=Q2]?> to two approaches to further suppress the sidelobe levels, i.e. orthogonal phase-coded waveforms with expanded mainlobe (OPCWEM) and its mismatched filters design. Specifically, they first propose a minimisation criterion to design nearly OPCWEM, which is a non-convex optimisation problem and solved by a least-pth minimax algorithm. Next, they design mismatched filters with given OPCWEM, which is formulated as a convex optimisation problem with min-max criterion and solved by a convex optimisation algorithm. Numerical results validate the effectiveness of the two approaches and the Doppler sensitivity is also analysed.

• 出版日期2018-2
• 单位西安电子科技大学