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| 基于参数可调随机共振的微弱单方波脉冲检测方法 | |
| 引用本文： | 王明阳,韩乐,周一宇,姜文利.基于参数可调随机共振的微弱单方波脉冲检测方法[J].宇航学报,2007,28(2):380-384,403. |
| 作者姓名： | 王明阳 韩乐 周一宇 姜文利 |
| 作者单位： | 1. 国防科技大学电子科学与工程学院,长沙,410073;空军装备研究院,北京,100085 2. 北京跟踪与通信技术研究所,北京,100097 3. 国防科技大学电子科学与工程学院,长沙,410073 |
| 摘 要： | 利用langevin方程构成的双稳态随机共振系统，本文提出了一种非线性检测器。利用Fokker-Planck方程的稳态概率密度函数，推导了该非线性检测器的检测概率、虚警概率和偏移系数，分析单方波脉冲在该检测器下的性能。实验结果表明，在低信噪比（-10dB）的情况下，随机共振检测器优于匹配滤波检测方法。 |
| 关 键 词： | 参数可调随机共振 匹配滤波 非线性检测 偏移系数 |
| 文章编号： | 1000-1328（2007）02-0380-05 |
| 修稿时间： | 2006-04-172006-09-30 |
Detection of Weak Quare Wave Signal Using Parameter Tuning Stochastic Resonance |
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| WANG Ming-yang,HAN Le,ZHOU Yi-yu,JIANG Wen-li.Detection of Weak Quare Wave Signal Using Parameter Tuning Stochastic Resonance[J].Journal of Astronautics,2007,28(2):380-384,403. | |
| Authors: | WANG Ming-yang HAN Le ZHOU Yi-yu JIANG Wen-li |
| Institution: | 1. School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China; 2. Airforce Institute of Armament Research, Beijing 100085, China; 3. Beijing Institute of Tracking and Communication Technology, Beijing 100097, China |
| Abstract: | A novel nonlinear detector is proposed using a bistable stochastic resonance system which is constructed by langevin equation.The performance of the detector is analyzed,and the probability of detection(PD),the probability of false alarm(PFA) are deduced by the probability density function(p.d.f) of Fokker-Planck equation.We compared the performance of the proposed detector with that of matched filter detector(MFD),and showed the superiority of the proposed detector over MFD under low signal to noise ratio(SNR)(below-10dB). |
| Keywords: | Parameter tuning stochastic resonance Matched filter Nonlinear detection The deflection ratio |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |