基于复合编码脉冲串的水下主动隐蔽性探测新方法研究

项目名称： 基于复合编码脉冲串的水下主动隐蔽性探测新方法研究

项目编号： No.61271414

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 冯西安

作者单位： 西北工业大学

项目金额： 60万元

中文摘要： 鱼雷、声纳等水下主动探测系统的使用环境已变得十分复杂，这些系统在探测潜艇时，所产生的大功率声波易被敌方的水下截获接收机截获。探测系统的发射信号一旦被截获，就面临着遭受水声对抗器材诱骗或者被硬杀伤武器摧毁的威胁。另外，潜艇消声隐身也增加了探测系统对其探测的难度。在这种情况下，主动探测系统如何在发现敌潜艇的同时又有效地隐藏自己, 已成为迫切需要解决的关键问题。水下主动隐蔽性探测(UCAD)为主动探测系统提供了新的理论和技术途径。本项目研究UCAD的新理论和新方法，(1)提出UCAD的复合编码脉冲串(CCP)波形；(2)针对超宽带的CCP波形，建立复杂水声信道中的目标回波模型；(3)提出与CCP波形的回波相匹配的主动检测方法；(4)提出UCAD的模拟实验方法，并研制一套UCAD消声水池模拟实验系统。旨在为水下主动探测系统在复杂使用环境下实现反对抗、抗干扰和对付隐身潜艇提供理论与实验基础。

中文关键词： 主动隐蔽性探测；波形设计；水下信号检测；隐蔽性能评估；实验验证

英文摘要： The application environment of underwater active detection system (for instance torpedo homing, sonar and so on) has become increasingly complicated. When detecting submarine, the detection system would generate high power sound wave, which can be easily capture by enemy's interception receiver. Once captured, the system will confront the risk of deceived by underwater acoustic countermeasure equipments or destroyed by hard killing weapons. In addition, the application of noise elimination and stealth technologies also increased the difficulty of detecting enemy submarine. Under such circumstances, how to effectively conceal the detection system while detecting enemy submarine has become extremely urgent. The occurrence of Underwater Concealed Active Detection (UCAD) provides a new theory and technical approach for the underwater active detection system. In this project, new theory and methods of UCAD will be researched. The innovative points are as follows: 1. Compound Coding Pulses (CCP) waveform will be proposed. 2. Aiming at ultra-wideband CCP, the target echo model in complex underwater acoustic channels will be established. 3. Active detection methods matched with the CCP echo will be presented. 4. An anechoic tank experimental scheme for the simulation of UCAD will be proposed. A set of experiment system

英文关键词： Concealed Active Detection；Waveform_Design；Underwater Signal Detection；Conceal Performance Evaluation；Experimental Verification