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智能雷弹被动声定位精度问题
引用本文:杨亦春,程翔,陈庆生.智能雷弹被动声定位精度问题[J].弹道学报,1999(3).
作者姓名:杨亦春  程翔  陈庆生
作者单位:南京理工大学机械学院!南京210094
摘    要:主要研究反直升机被动声定位的精度问题.建立了定位的计算模型,重点分析了影响定位精度的因素,论证了保证定位精度所需要的采样率和采样分辨率,论证了采用高频窄带信号来提高时延估计计算精度的可行性,使得定位精度可以达到5% 以上.还分析了一种压缩信号频谱方法来提高相关分析的分辨率,从而提高雷弹的定位精度.并在此基础上设计了实现目标识别和定位的系统结构原理框图.

关 键 词:被动声探测  声定位  目标识别  时延估计

PROBLEM ON ACCURACY OF ACOUSTICS PASSIVE POSITIONING OF THE INTELLIGENT MINE
Yang Yichun,Cheng Xiang,Chen Qingsheng.PROBLEM ON ACCURACY OF ACOUSTICS PASSIVE POSITIONING OF THE INTELLIGENT MINE[J].Journal of Ballistics,1999(3).
Authors:Yang Yichun  Cheng Xiang  Chen Qingsheng
Abstract:The main purpose of this study was to increase positioning precision of the anti helicopter passive acoustic system. The main points of the study were to create a precise positioning model, to analysis some factors that may effect the positioning resolution emphatically, to demonstrate what sampling rate and sampling resolution were necessary for device to get enough positioning precision, to demonstrate whether the device can use high frequency narrow band acoustic signal of the helicopter to increase precision of time delay estimation so that we can obtain a precision up to 5%. A new method which used constricted signal spectrum was conducted to increase correlation calculating resolution, so as to increase the mine's positioning precision. On the basis of the way we got, a complete principle block graph of the mine's acoustic detecting system was given out.
Keywords:passive acoustics detecting  acoustics target localization  object recognize  time  delay estimation
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