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This paper examines we aim to improve the performance of target detection in the presence of signal‐dependent interference in multiple‐input multiple‐output radar through the joint design of the receiver spatial filter and the covariance matrix of waveforms. For this purpose, the signal‐to‐interference‐plus‐noise ratio is considered as the design criterion. The proposed method is a sequential algorithm that calculates the receiver filter coefficients through a closed form in each step of the algorithm. The correlation of transmit waveforms is also calculated utilizing the coordinate descent method. The covariance matrix is designed in two forms. In the first form, it is assumed that the optimal matrix is a Toeplitz matrix which leads to a simpler design. In the second form, the covariance matrix is calculated by combining orthogonal waveforms, which yields better performance for interfere reduction. Simulation results show that the proposed method has more appropriate performance in comparison with other methods.

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