信杂噪比约束下基于互信息的雷达波形设计

doi:10.12305/j.issn.1001-506X.2021.07.06

Abstract

Abstract:

In the case of limited transmitted signal energy, the radar performance limits the range of signal to interference plus noise ratio (SINR), and the radar waveform design is constrained by the SINR. Therefore, in order to improve the target estimation performance of cognitive radar, based on the non-negative condition of relative entropy, the boundary of mutual information (MI) and the threshold of SINR theoretically are derived. Then, in the signal-dependent clutter environment, a maximizing MI based waveform design method under SINR constraint is proposed. Simulation results verify the monotonous increase, threshold limit and mutual constraint relationship between MI and SINR. The results show that under the constraint of SINR, the optimal waveform can make full use of the transmitted energy and extract signals at the frequency bins where the target and the clutter is weak.

Key words: mutual information (MI), signal to interference plus noise ratio (SINR), cognitive radar, waveform design

CLC Number:

TN957.51

Yu XIAO, Zhenghong DENG. MI-based radar waveform design under SINR constraint[J]. Systems Engineering and Electronics, 2021, 43(7): 1775-1780.

Figures/Tables 5

References 17

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MI-based radar waveform design under SINR constraint

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