| 不同干扰强度下三种鱼雷自导检测器的性能 |
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| 引用本文： | 马艳,李志舜.不同干扰强度下三种鱼雷自导检测器的性能[J].声学技术,2003,22(2):95-97,112. |
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| 作者姓名： | 马艳 李志舜 |
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| 作者单位： | 西北工业大学航海工程学院,710072 |
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| 摘 要： | 副本相关器、副本相关积分器和分段副本相关器分别是理想信道、时间扩展信道和频率扩展信道(又称快速衰落信道)中的最佳似然比检测器。针对这三种检测器在背景干扰功率变化的应用情况，推导了背景干扰功率为σ^2时检验统计量的分布，在此基础上，依据奈曼-皮尔逊准则，可确定此时强度背景下的检测门限，并进一步确定其检测概率，最后将理论的结果与Monte-Carlo实验进行了比较，结果与推导的一致。
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| 关 键 词： | 干扰强度 鱼雷 自导检测器 副本相关器 副本相关积分器 分段副本相关器 检测门限 匹配滤波器 |
| 文章编号： | 1000-3630(2003)02-0095-03 |
| 收稿时间： | 2001/9/3 0:00:00 |
| 修稿时间： | 2002/3/15 0:00:00 |
Detection performance of three detectors of torpedo-homing under interference of different strengths |
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| MA Yan and LI Zhi-shun.Detection performance of three detectors of torpedo-homing under interference of different strengths[J].Technical Acoustics,2003,22(2):95-97,112. |
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| Authors: | MA Yan and LI Zhi-shun |
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| Affiliation: | College of Marine Engineering, Northwestern Polytechnical University, Xi''an 710072, China;College of Marine Engineering, Northwestern Polytechnical University, Xi''an 710072, China |
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| Abstract: | Replica correlation detector, replica correlation integration processor and segmented replica correlation detector are optimum LR detectors for ideal channels, time spreading distortion channels and fast fading distortion channels, respectively. The distribution of test statistic is derived for the interference power σ2. Based on the results, a detection threshold is determined according to Neyman-Pearson''s rule. The detection probability is also obtained. The result is compared with that of a Monte-Carlo experiment. Simulated and analytical results are in good agreement. |
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| Keywords: | distortion channel correlation detector integration processor detection performance adaptive threshold |
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