| 摘要: |
| 建立了外辐射源单站定位的几何模型，给出了测量目标参数(方位角、到达时间差、基线距离、多普勒频移)的主要方法，分析了影响目标参数观测精度的相关因素。比较两种典型定位算法的几何定位精度，并利用子集优选策略改善算法性能，在不同观测精度和位置关系的条件下，进行仿真实验。实验结果表明，各算法的定位精度与目标观测精度和几何位置有关，而对于改善后的定位算法，使得大部分区域内的目标定位精度提高了50%，并减少了目标定位盲区。 |
| 关键词: 单站外辐射源定位 观测精度 几何定位精度 子集优选 |
| DOI：10.3969/j.issn.1672-2337.2018.02.014 |
| 分类号:TN957 |
| 基金项目:国家自然科学基金(No.91538201，61671463) |
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| Simulation and Analysis of Errors in Passive Monostatic Location |
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GUAN Xin, LYU Zhengjun, YI Xiao
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Department of Electronic and Information Engineering, Naval Aeronautical University, Yantai 264001, China
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| Abstract: |
| The geometrical model of passive monostatic location is set up. The measurement methods of target parameters (direction of arrival, time difference of arrival, baseline distance, and Doppler shift) are discussed. The relevant factors which can influence observation accuracy of target parameters are analyzed. The geometrical dilution of precision (GDOP) of two location algorithms are compared, and the algorithms are improved with subset optimization. The simulation experiments are made in the different conditions of observation accuracies and position relations. The simulation results show that the location accuracies of the two algorithms have relations with observation accuracies and geometrical position. The improved algorithms make the target location errors reduce 50% in most regions and decrease the location blind area. |
| Key words: passive monostatic location observation accuracy geometrical dilution of precision （GDOP） subset optimization |
