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基于信号和噪声统计不相关特性,提出了相关算法在海缆埋深检测中的新应用,并结合IIR(无限脉冲冲击响应)滤波算法进行了分析比较。当幅值为1 V的25 Hz探测信号分别受到幅值为100 V的20.15 Hz,24.45 Hz强噪声干扰时,相关算法滤波后得到的归一化幅值分别为1.185和5.870,而IIR滤波算法得到的归一化幅值为1.42和9.32。仿真结果表明,海缆探测中相关算法优于IIR滤波算法。
Based on the uncorrelated characteristics of signal and noise statistics, a new application of the correlation algorithm in the detection of submarine cable depth is proposed, which is compared with IIR (Infinite Impulse Impulse Response) filtering algorithm. When the 25 Hz sounding signal with amplitude of 1 V is subjected to the strong noise of 20.15 Hz and 24.45 Hz with the amplitude of 100 V respectively, the normalized amplitudes obtained by the correlation filtering are 1.185 and 5.870, respectively. The IIR filtering algorithm The normalized amplitudes obtained were 1.42 and 9.32. The simulation results show that the correlation algorithm in submarine cable detection is superior to the IIR filter algorithm.