基于信号错位叠加算法的信号检测方法研究与应用

Research and application of signal detection method based on signal dislocation superposition algorithm

现有海洋环境日趋复杂,对于低信噪比水声信号的检测复杂度和难度日趋增加。信号检测技术作为某项目声侦听功能的关键部分,如何做到在复杂的海洋水声环境中尽量检测到低信噪比信号,才能让,成为了确保声侦听功能更为有效的关键一步。这里采用一种信号错位叠加方法,通过MATLAB对算法进行理论验证后,移植到ADI公司TIGER SHARC系列产品之一的ADSP TS201芯片上,使用C语言与汇编语言混合编程的形式,在声侦听功能中成功验证了错位叠加算法。实验证明,该信号错位叠加方法能够提高信号在低信噪比信号中的能量,有效提高信号检测,且方便易用。

The existing marine environment is becoming more and more complex,and the detection complexity and difficulty of low signal-to-noise ratio underwater acoustic signals are increasing day by day.As the key part of the sound detection and listening function of a certain project,how to detect the low SNR signal as far as possible in the complex marine underwater acoustic environment has become a key step to ensure the sound listening function is more effective.This paper uses a signal dislocation superposition method,which is MATLAB to verify the algorithm,and then transplanted to the ADSP TS201 chip of one of ADI company’s TIGER SHARC series products,and uses C language and assembly language mixed programming The dislocation superposition algorithm is successfully verified in the sound detection and listening function.Experiments show that this method can improve the energy of signal in low SNR signal,effectively improve signal detection,and is convenient and easy to use.