HAN Xue, PIAO Sheng-chun. Adaptive line spectrum extraction method of underwater target signal based on polarization filtering[J]. 2018, (8): 58-60. DOI: 10.13873/j.1000-9787(2018)08-0058-03.
自适应极化滤波的水中目标线谱提取方法
摘要
利用水中目标具有极化的特点
采用奇异值分解方法
对水中目标线谱信号在频域进行极化分析
通过构造极化滤波函数
对线谱信号进行极化滤波处理。仿真和实验结果表明:采用提出的方法可以自适应地提取出线谱
当水中目标信号的信噪比大于-7d B时
提出的方法具有较高的线谱提取性能。
Abstract
By using polarization characteristics of underwater target signals
polarization characteristics of underwater target line spectrum signal is analyzed via singular value decomposition( SVD) method in frequency domain
and the line spectrum signal is filtered by constructing polarization filtering function. The simulation and experiment results show that the polarization filtering line spectrum extraction method can extract the line spectrum signal adaptively and when the SNR of the underwater target signal is larger than-7 d B
the proposed method has high characteristic of extraction line spectrum signal.