摘要
水下目标辐射噪声的模拟是水声学领域中一个重要的课题,其中尤以舰船的辐射噪声最为典型。对舰船辐射噪声进行研究模拟,有利于被动式声呐的研发、测试。文章首先对舰船的辐射噪声进行了频域特性的分析,给出其线谱与连续谱叠加的模型。连续谱通过对高斯白噪声的自适应滤波得到,线谱根据设置的参数得到。随后在VIVADO HLS平台实现了模拟连续谱噪声的算法并做了一定的优化加速,同时生成一个IP核,该IP核在VIVADO软件中与其他器件连接搭建得到Overlay结构,最终在PYNQ平台上调用该Overlay,实现了在PYNQ平台上生成舰船辐射噪声数据。
The simulation of underwater target radiated noise is an important subject in the field of underwater acoustics,especially the ship radiated noiseis the most typical.The research and Simulation of ship radiated noise is beneficial to the development and test of passive sonar.In this paper,the frequency domain characteristics of ship radiated noise are analyzed,and the superposition model of line spectrum and continuous spectrum is given.The continuous spectrum is obtained by adaptive filtering of Gaussian white noise,and the line spectrum is obtained according to the set parameters.Then,the algorithm of simulating continuous spectrum noise is implemented on VIVADO HLS platform,and some optimization and acceleration are made.At the same time,an IP core is generated.The IP core is connected with other devices in VIVADO software to build the overlay structure.Finally,the overlay is called on the PYNQ platform,and the radiated noise data of the ship are generated successfully.
出处
《科技创新与应用》
2021年第8期59-61,共3页
Technology Innovation and Application
基金
国家级大学生创新创业训练计划资助项目(编号:201910145191)
中央高校基本科研业务专项资金资助(项目批准号:N182410001)。
