基于时差和频差的固定多站定位方法及分析

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1001-506X(2011)09-1954-05

基于时差和频差的固定多站定位方法及分析

郭福成李腾

国防科学技术大学电子科学与工程学院,湖南长沙410073

摘要:针对利用信号时差和频差信息的固定多站对运动辐射源定位问题,提出了一种基于加权最小二乘的单次定位解算新方法和基于扩展卡尔曼滤波的多次定位跟踪滤波方法。分析了存在时差和频差参数测量误差条件下的单次定位误差克拉美-罗下限几何分布图,并仿真了多次定位条件下的定位性能,将其与仅测时差定位的性能进行了比较。仿真表明,增加频差信息有助于提高对运动辐射源的定位跟踪精度。

无源定位;时差;频差;克拉美-罗下限

TN971A10. 3969/j. issn. 1001-506X. 2011.09.08Passive localization method and its precision analysis based on 

TDOA and FDOA of fixed sensors

GUO Fu-chengLI Teng

2010-04-192011-04-14

国家自然科学基金(60702010);国防科技重点实验室基金(9140C860304)资助课题

郭福成(1975-),男,副教授,博士,主要研究方向为无源定位、信号处理。E-mail:gfcly75@gmail. com

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