一种低截获水声信号快速检测算法  

A Fast Detection Algorithm of Low Probability of Intercept Underwater Acoustic Signals

作　　者：李帅 曹占启 LI Shuai;CAO Zhanqi(Unit 41,No.91388 Troops of PLA,Zhanjiang 524022)

机构地区：[1]91388部队41分队

出　　处：《舰船电子工程》2019年第8期169-171,179,共4页Ship Electronic Engineering

摘　　要：水声对抗演习中,传统的合作声信号由于易暴露潜艇自身位置而难以形成红蓝多方有效对抗的局面,从而导致演习效率低下,效果不佳。低截获合作声信号虽能有效克服传统合作声信号的不足,但检测运算量大,应用范围有限。论文针对该问题,设计了一种基于复相关解调降采样和FFT频域运算的快速检测算法,在保证一定检测精度的前提下,有效降低了运算量,增大了低截获信号在水下目标定位中的应用范围,并通过仿真计算证明了该方法的有效性。The traditional underwater acoustic signals applied in underwater acoustic confrontation exercises which are likely to reveal the position of submarine itself are difficult to form an effective multi-confrontational situation between red and blue,which will result in inefficient and ineffective exercises.Low probability of intercept underwater acoustic signals can effectively overcome the shortcomings of traditional underwater acoustic signals,while the large computation limits their applications.So a fast detection algorithm based on multiple correlation,downsampling and fourier transform is proposed to reduce the computation and expand the application of low probability of intercept underwater acoustic signals in underwater target positioning of range under the premise of guaranteed detection accuracy.Finally,some simulation results and analysis of the algorithm are presented to verify its validity.

关 键 词：低截获 降采样 复相关 频域 快速检测 

分 类 号：TB566[交通运输工程—水声工程]