迭代时差频差联合定位算法及其性能分析  

Iteration algorithm for joint TDOA&FDOA location and its performance analysis

作　　者：杨洁[1] 刘聪锋[2] 田中成[3] 张斌[3] 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121 [2]西安电子科技大学电子对抗研究所,陕西西安710071 [3]中国北方电子设备研究所一室,北京100191

出　　处：《西安电子科技大学学报》2015年第4期140-146,共7页Journal of Xidian University

基　　金：国家自然科学基金资助项目(61402365;61271300);陕西省教育厅自然科学类专项科研计划资助项目(2013JK1076);国家部委资助项目;陕西省工业攻关资助项目(2013K-33;2014KW01-04);国家留学基金资助项目(201406965022);中央高校基本科研业务费专项资金资助项目(K0551302006)

摘　　要：针对运动观测站对固定辐射源的时差频差联合定位场景,提出了基于迭代方法实现的目标位置求解定位算法,解决了基于时差频差联合定位方法的目标位置求解问题.所提方法将辐射源载频也作为未知量进行求解,利用时差和频率测量方程进行泰勒级数展开,在忽略高阶项的条件下,通过迭代方法求解目标位置和辐射信号载频;分析了时差频差联合定位算法的定位精度,并进行了仿真分析,验证了理论分析的正确性和算法的有效性,为频差定位算法的应用提供了理论基础.Based on the FDOA and TDOA united location of the radiative source using moving observations , an iterative algorithm which solves the location of the target is proposed , which overcomes the difficulty in solving FDOA and TDOA united location . The proposed algorithm sets the carrier frequency as the unknown parameter , and under the condition of omitting the higher order items , the measured time difference and frequency equations are used to figure out both of the target position and carrier frequency from the emitter in the iterative way . The location accuracy of the TDOA and FDOA united location algorithm is analyzed in detail ; furthermore , elaborative simulation is given , which proves the accuracy and effectiveness of the theoretical analysis and provides TDOA and FDOA united location algorithm with theoretical foundation .

关 键 词：无源定位 时差频差联合定位 迭代法 性能分析 

分 类 号：TP957[自动化与计算机技术]