运动观测站对固定辐射源频差定位算法  

FDOA Location Algorithm for Fixed Emitter with Moving Observer

作　　者：刘聪锋[1] 杨洁[2] 王奉帅[1] 

机构地区：[1]西安电子科技大学,电子对抗研究所,陕西西安710071 [2]西安邮电学院通信与信息工程学院,陕西西安710121

出　　处：《电子学报》2012年第5期907-910,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.61072107);陕西省教育厅自然科学类专项科研计划项目(No.11JK1014);博士后基金(No.20090451251)

摘　　要：针对频差定位中的运动观测站对固定辐射源的定位场景,提出了一种目标位置直接求解频差定位算法,解决了基于频差定位方法的算法求解问题.所提方法利用目标相对于参考站的极坐标表示公式,巧妙借助频差定位方程的形式,按照先求解目标的方位角,再求解目标的径向距离,最终获得目标准确位置的直接求解公式.其中对算法进行了详细的分析,讨论了求解过程中目标方位角和径向距离的求解模糊及其处理方法,并利用仿真分析验证了理论分析的正确定,为频差定位算法的应用提供了理论基础.Based on the FDOA （frequency difference of arrival） location of the radiative source using moving observations, an FDOA location algorithm which solves the location of the target directly is proposed, which overcomes the difficulty in solving FDOA location algorithm. The proposed algorithm utilizes the polar coordinates to express the target coordinate relative to reference station, the algorithm uses the form of the FDOA location equation with skill, firstly, calculates the azimuth of the target, and then solves the radial range between the target and reference station, finally the equation with which the accurate location of the target can be determined directly is obtained.In this paper, an elaborate analysis of the algorithm is given,the ambiguity of azimuth and radial range as well as the solving method are discussed, simultaneously, simulation analysis shows that the theoretical analysis is correct, which provides the application of FDOA location algorithm with theoretical basis.

关 键 词：无源定位 频差定位 直接求解法 GDOP分析 

分 类 号：TN957[电子电信—信号与信息处理]