基于卷积性质的矢量水听器信号处理方法

Signal processing method of vector hydrophone based on convolution property

矢量水听器可以同时测量声压和振速,能够提高声纳系统整体的性能,其核心技术为振速传感器。目前为提高精准度,广泛使用加速度型振速传感器,而加速度型传感器的灵敏度随频率每倍频程增长6 dB,故需要进行补偿。针对此问题,本文提出了一种利用卷积的计算性质来处理该问题的方法。该方法利用卷积的计算性质,用卷积的方法来代替常规算法进行振速的计算。仿真结果表明:该方法得到的结果准确性较高,真实实验数据的处理结果很好地验证了结论,对用数字信号处理器(DSP)处理加速度式矢量水听器的数据处理有很好的参考价值。

The vector hydrophone can measure sound pressure and vibration velocity at the same time,which can improve the overall performance of sonar system.The core technology of vector hydrophone is vibration velocity sensor.At present,in order to improve the precision,acceleration vibration velocity sensors are widely used.The sensitivity of acceleration sensors increases by 6 dB with each octave of frequency,so compensation is needed.In order to solve this problem,a method using convolution computational property is proposed.This method replace the conventional algorithm with convolution method for calculation of vibration velocity based on computational property of convolution.The simulation results show that the results obtained by this method has high accuracy,and processing results of the real experimental data well verify the conclusion,which has a good reference value for the data processing of acceleration vector hydrophone by digital signal processor(DSP).