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| 基于TDOA/FDOA不相关估计的选择融合定位方法 | |
| 引用本文： | 朱伟强,束锋,陆锦辉,马琴,黄培康.基于TDOA/FDOA不相关估计的选择融合定位方法[J].宇航学报,2010,31(8). |
| 作者姓名： | 朱伟强 束锋 陆锦辉 马琴 黄培康 |
| 作者单位： | 1. 南京电子设备研究所,南京,210007 2. 南京理工大学电光学院,南京,210094 3. 中国第二研究院,北京,100854 |
| 基金项目： | 国家自然科学基金，中国航天科工集团南京电子设备研究所航天基金 |
| 摘 要： | 为提高单独到达时差或频差定位精度,本文首先提出可达TDOA克拉美罗界的TDOA解析解,然后采用最大似然网格搜索算法获得FDOA定位解,最后采用基于TDOA/FDOA不相关估计选择融合的解形成联合解。仿真和理论分析表明:该联合算法定位性能优于单独定位,定位精度在有或无地球约束时均可达联合的克拉美罗界。 |
| 关 键 词： | 到达时差 到达频差 不相关估计的选择融合 克拉美罗界 |
A TDOA/FDOA Uncorrelated Estimation-Based Selection Fusion Positioning Method |
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| ZHU Wei-qiang,SHU Feng,LU Jin-hui,MA Qing,HUANG Pei-kang.A TDOA/FDOA Uncorrelated Estimation-Based Selection Fusion Positioning Method[J].Journal of Astronautics,2010,31(8). | |
| Authors: | ZHU Wei-qiang SHU Feng LU Jin-hui MA Qing HUANG Pei-kang |
| Institution: | ZHU Wei-qiang1,SHU Feng2,LU Jin-hui2,MA Qing1,HUANG Pei-kang3(1.Nanjing Electronic Equipment Institute,Nanjing 210007,China,2.School of Electronic Engineering and Optoelectronic Technique,Nanjing University of Science and Technology,Nanjing 210094,3.The 2nd Academy of CASIC,Beijing 100854,China) |
| Abstract: | To improve positioning accuracy of independent time difference of arrival(TDOA) or independent frequency difference of arrival (FDOA),an analytic solution of TDOA achieving the Cramer-Rao lower bound (CRLB) is given first,then a maximum likelihood(ML) grid search method is used to obtain the FDOA solution,and finally a joint solution based on selection fusion of TDOA/FDOA uncorrelated estimation (SFUE) is used to combine the TDOA and FDOA solutions.From simulation and theory analysis,it follows that the pos... |
| Keywords: | Time difference of arrival(TDOA) Frequency difference of arrival(FDOA) Selection fusion of uncorrelated estimation Cramer-rao lower bound |
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