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| 基于广义高斯噪声模型的低频线谱检测 | |
| 引用本文： | 杨秀庭,曹涛,李敏.基于广义高斯噪声模型的低频线谱检测[J].声学技术,2011,30(2):129-132. |
| 作者姓名： | 杨秀庭 曹涛 李敏 |
| 作者单位： | 1. 海军大连舰艇学院作战指挥系,辽宁大连,116018 2. 海军装备部电子部,北京,100841 3. 空军指挥学院后勤装备系,北京,100081 |
| 摘 要： | 研究浅海环境噪声中低频线谱的检测问题.首先对实测海洋环境噪声的统计特性进行分析,提出了应用广义高斯分布对海洋环境噪声建模方法.在此基础上,针对低频线谱检测问题,推导了广义高斯噪声场中的最大似然检测器和渐近检测器,给出了弱线谱条件下线谱频率的最大似然估计.最后,利用实测数据对三种检测器的线谱检测性能进行了验证,结果表明:... |
| 关 键 词： | 广义高斯分布 线谱检测 最大似然估计 |
| 收稿时间： | 2010/4/20 0:00:00 |
| 修稿时间： | 2010/7/10 0:00:00 |
Low frequency line spectrum detection based on generalized Gaussian noise model |
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| YANG Xiu-ting,CAO Tao and LI Min.Low frequency line spectrum detection based on generalized Gaussian noise model[J].Technical Acoustics,2011,30(2):129-132. | |
| Authors: | YANG Xiu-ting CAO Tao and LI Min |
| Affiliation: | YANG Xiu-ting1,CAO Tao2,LI Min3(1.Department of Operational Commands,the Navel Academy of PLA,Dalian 116018,Liaoning,China,2.Electronic Subordinate of Naval Armanents Department,Beijing 100841,3.Department of Logistic Equipments,Air Command Academy,Beijing 100081,China) |
| Abstract: | The problem of line spectrum detection in shallow water is investigated in this paper.The statistics of ambient noise recorded in sea trials is firstly analyzed by distribution fitting and Kolmogorov-Smirnov test,and the generalized Gaussian distribution is proved to be an appropriate model for ambient noise modeling.Thereafter,the generalized maximum likelihood detector(MLD) and asymptotic detector are deduced and the maximum likelihood estimation of frequency is proposed under the assumption of weak signa... |
| Keywords: | generalized Gaussian distribution Line spectrum detection maximum likelihood estimation |
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