基于短时傅里叶变换的鱼雷自导信号参数实时估计及应用  

Real-time Parameter Estimation of Torpedo Homing Signal Based on STFT and its Application

作　　者：周浩[1] 袁志勇[1] 

机构地区：[1]海军工程大学,武汉430033

出　　处：《武汉理工大学学报（交通科学与工程版）》2009年第6期1120-1123,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国防重点实验室基金项目资助(批准号:51444060101JB1108)

摘　　要：提出了COTS产品在声靶系统对鱼雷自导信号参数实时估计中的应用方案,采用短时傅里叶变换(STFT)实现对鱼雷自导信号脉冲载频、脉冲到达时刻、脉冲宽度和脉冲间隔的实时估计.在鱼雷自导信号参数高精度估计的基础上,利用中频直接采样有效减小了信号处理的数据量.通过工业D/A板试验,证明该应用方案达到了设计功能和性能指标要求,并且降低了开发成本,减小了项目的开发周期,保证了应用的灵活性和二次开发性.COTS is a trend in military production development. A torpedo homing signal parameter real- time estimation scheme of acoustic target is presented. Pulse frequency, start time, width and repetition time real-time estimation of torpedo homing signal is realized using STFT. The scheme decrease data quantity and hold on high accuracy estimation of fish torpedo parameter. The function and performance is proved well done by industry D/A test. Test result shows that development costs and periods had been decreased and it is flexible in repetition develop ment.

关 键 词：COTS 短时傅里叶变换 实时测频 脉冲到达时刻 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]