| 非高斯杂波背景中的两个距离扩展目标检测器 |
| |
| 引用本文： | 顾新锋,简涛,何友,郝晓琳. 非高斯杂波背景中的两个距离扩展目标检测器[J]. 宇航学报, 2012, 33(5): 648-654. DOI: 10.3873/j.issn.1000-1328.2012.05.018 |
| |
| 作者姓名： | 顾新锋 简涛 何友 郝晓琳 |
| |
| 作者单位： | （1. 海军航空工程学院信息融合技术研究所，烟台 264001； 2. 烟台电力设计院, 烟台 264001) |
| |
| 基金项目： | 国家自然科学基金，新世纪人才支持计划，海军航空工程学院青年科研基金 |
| |
| 摘 要： | 针对采用球不变随机向量(SIRV)建模的非高斯杂波背景中检测具有稀疏散射点的距离扩展目标问题，先假设目标强散射点的位置信息已知，采用广义似然比检验(GLRT)理论，提出了基于散射点位置的GLRT (SL-GLRT) 检测器。然后，采用门限法估计散射点的位置信息，提出了双门限恒虚警率(DT-CFAR)检测器，推导了虚警概率与检测门限关系的解析表达式，并给出门限的确定方法。与现有方法相比，散射点位置信息已知时， SL-GLRT 具有最佳的检测性能，散射点位置信息未知时，DT-CFAR具有较好的鲁棒性。
|
| 关 键 词： | 非高斯杂波 距离扩展目标 恒虚警率 检测 |
| 收稿时间： | 2011-07-07 |
Two Detectors of Range-Spread Target in Non-Gaussian Clutter |
| |
| GU Xin-feng , JIAN Tao , HE You , HAO Xiao-lin. Two Detectors of Range-Spread Target in Non-Gaussian Clutter[J]. Journal of Astronautics, 2012, 33(5): 648-654. DOI: 10.3873/j.issn.1000-1328.2012.05.018 |
| |
| Authors: | GU Xin-feng JIAN Tao HE You HAO Xiao-lin |
| |
| Affiliation: | （1.Research Institute of Information Fusion, Naval Aeronautical and Astronautical University, Yantai 264001, China； 2. Yantai Electricity Design CO. LTD, Yantai 264001, China） |
| |
| Abstract: | For the problem of detecting range-spread target with spare scatterers in non-Gaussian clutter modeled as spherically invariant random vector(SIRV),it is assumed that the location information of scatterers is known and a generalized likelihood ratio test detector based on scatterers location(SL-GLRT) is proposed.Then the threshold method is used to estimate the location information of scatterers,and a two thresholds constant false alarm ratio detector(TD-CFAR) is proposed.The analytical expression relating false alarm probability to detection threshold is deduced,and a method for determining the threshold is given.The results show that the SL-GLRT has the best detection performance when the information of scatterers is known,and the DT-CFAR is more robust when it is unknown. |
| |
| Keywords: | Non-Gaussian clutter Range-spread target Constant false alarm rate Detection |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《宇航学报》浏览原始摘要信息 |
|
点击此处可从《宇航学报》下载全文 |
