Optimization Algorithm for DOA Estimation of a Shallow Sea Target Based on Active Time Reversal

Xibei Gongye Daxue Xuebao

关键词: direction of arrival;    estimation;    optimization;    algorithms;    targets;    models;    signal to noise ratio;    active time reversal (atr);    uniform line array;   

DOI  :  10.1051/jnwpu/20183620270

来源: DOAJ

【 摘 要 】

Time reversal technique is applied to the DOA estimation of a shallow sea target, and a method based on active time reversal (ATR) is proposed to achieve correct estimation under multipath and low signal-to-noise (SNR) conditions. Combining the classical ray theory with array signal processing theory, the conventional multipath DOA estimation model based on uniform line array and the ATR-based DOA estimation model are set up respectively. The Capon algorithm is employed to simulate the models and compare it with conventional one. The simulation results show that the ATR-based estimation model can better estimate the azimuth angle of the target than the conventional counterpart, provide higher resolution and better suppress side lobes with the same signal-to-noise ratio (SNR), especially the low SNR.

【 授权许可】

Unknown