|
|||||
|
|
| 基于最大熵谱估计的舰船静电场实时检测方法 | |
| 引用本文： | 陈剑云,李俊,袁勇,李松.基于最大熵谱估计的舰船静电场实时检测方法[J].舰船科学技术,2009,31(4). |
| 作者姓名： | 陈剑云 李俊 袁勇 李松 |
| 作者单位： | 1. 南海舰队司令部装备处,广东,湛江,524000 2. 海军工程大学,湖北,武汉,430033 3. 中国人民解放军61828部队,新疆,喀什,844200 4. 海军装备研究院,北京,100161 |
| 基金项目： | 国防重点实验室资助项目 |
| 摘 要： | 舰船静电场是海水中舰船产生的物理场之一,是很难被隐身的目标特征信号.以往对静电场的检测方法都是基于信号的时域特征,低信噪比情况下,检测效果差.通过对舰船静电场的频域特征分析发现,其能量主要集中在低频段,利用这个特点,提出了一种基于最大熵谱估计(MESE)的舰船静电场实时检测的方法.首先对舰船静电场信号进行最大熵谱估计,然后提取低频段功率谱值作为特征量,通过设定的浮动阈值进行分段功率谱滑动检测,用实船数据对该方法进行了验证,取得了较好的效果. |
| 关 键 词： | 舰船 静电场 最大熵谱估计 浮动阈值 滑动功率谱 |
Method on real-time detection of ship static electric signature based on MESE |
|
| CHEN Jian-yun,LI Jun,YUAN Yong,LI Song.Method on real-time detection of ship static electric signature based on MESE[J].Ship Science and Technology,2009,31(4). | |
| Authors: | CHEN Jian-yun LI Jun YUAN Yong LI Song |
| Institution: | 1.Naval Headquarter of South Sea Feelt;Zhanjiang 524000;China;2. Naval University of Engineering;Wuhan 430033;3.Unit 61828 of PLA;Kashi 844200;4.Naval Academy of Armament;Beijing 100161;China |
| Abstract: | Static field is one of the physical fields generated by ships in the sea water. The detection result is poor using the traditional method in low SNR(signal noise rate). To detect the target using it,the character of ship's static signature is studied. It has been showed that the main power of static electric field of a ship centralizes in the low frequency region. With the character,the paper proposes a method that detecting the object based on maximum entropy spectral estimation(MESE). Firstly,the static e... |
| Keywords: | ships static field maximum entropy spectral estimation floating threshold moving power spectrum |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |