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Research on FDA-MIMO Interference Suppression Based on Logarithmic Sparse Array
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    Abstract:

    Being a new radar system in which frequency diverse array (FDA) combines with multiple input multiple output (MIMO) structure, the waveform diverse array radar has great application prospects in the field of main lobe interference suppression. In this paper, the FDAMIMO team interference suppression method based on logarithmic sparse array is analyzed. Firstly, the logarithmic sparse array is introduced into FDAMIMO system, and then the multimain lobe problem caused by the basic FDA “s” beam pattern is improved by using nonlinear frequency offset, and then, RCB algorithm is used to correct the steering vector mismatch in the process of interference suppression. Finally, the simulation results show that when the target and the jamming are separable in the range dimension but close in the angle dimension, the proposed method can achieve the effective null of the jamming while maintaining the main lobe gain, providing a new idea for the effective suppression of team interference.

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  • Received:
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  • Online: December 02,2021
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