Distributed MIMO radar orthogonal waveforms and mismatched filters design with expanded mainlobe

Distributed Multiple-input Multiple-output radar has been intensively studied recently and an important issue is to design orthogonal phase coded waveforms. In this paper, we firstly design orthogonal phase coded waveforms with expanded mainlobe width, and the criterion is to minimize autocorrelation peak sidelobe levels (APSL) and peak cross correlation levels (PCCL) of the orthogonal waveforms, and to match a desirable mainlobe. Then, to further suppress the APSL and PCCL, a method to design mismatched filters is raised, which can be solved by the convex optimization algorithm. Numerical results verify the effectiveness of the proposed method.