文章摘要
李嶷,孙长瑜,余华兵,曹涛.多基地声纳系统检测性能分析[J].声学技术,2010,(5):478~483
多基地声纳系统检测性能分析
Analysis of the detection performance of multistatic sonar system
投稿时间:2009-10-16  修订日期:2010-01-14
DOI:
中文关键词: 多基地声纳系统  最优检测接收机  检测性能  基地选择
英文关键词: multistatic sonar system  optimum receiver  detection performance  selection of statics
基金项目:
作者单位E-mail
李嶷 中国科学院声学研究所, 北京, 100190 liyi_731973@yahoo.com.cn 
孙长瑜 中国科学院声学研究所, 北京, 100190  
余华兵 中国科学院声学研究所, 北京, 100190  
曹涛 海军装备部电子部, 北京, 100841  
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中文摘要:
      分析了多基地声纳系统的检测性能。利用检测统计量,推导了在背景噪声为高斯白噪声、信号为高斯随机过程的情况下,主动多基地声纳系统的最优检测接收机。指出主动多基地声纳系统的最优检测接收机为匹配滤波器。然后,提出了一种基于"和检测"原理的简化检测接收机,并分析了它的检测性能及基地选择原则。结果表明:对于这种简化的检测接收机,当一个基地的检测性能远远优于其它基地时,如果再将其它基地融入到处理系统中,系统的检测性能不会得到明显提高,甚至可能会下降;另一方面,当各个基地的输入信噪比接近时,参与检测的基地个数越多,系统的检测性能越好。
英文摘要:
      The detection performance of multistatic sonar systems is analyzed.At first,with the likelihood ratio test,the optimum receivers of active multistatic sonar systems are deduced from a Gaussian random process in the presence of additive white Gaussian noise.The optimum receiver of active multistatic sonar systems is a matched filter.Then a simplified receiver based on the sum detector is put forward and its performance is analyzed.It can be seen that when the detection performance of any static is much better than other statics,the detection performance of the sonar system will not be improved or even degrade when adding more statics to the system.On the other hand,when the signal to noise ratio of the input of each static is in a close range,the detection performance of the sonar system will be improved as adding more statics.
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