计算机应用研究2016，Vol.33Issue(11)：3408-3410,3.DOI:10.3969/j.issn.1001--3695.2016.11.046
一种基于互模糊函数分段相干累加的TDOA／FDOA参数快速估计算法
Fast TDOA/FDOA estimation method based on coherent accumulative of short-time CAF
摘要
Abstract
In order to solve the huge calculation problem in conventional cross ambiguity function (CAF ) algorithm for TDOA/FDOA estimation,this paper proposed a fast algorithm using short-time CAF based on coherent accumulation and ap-proximate calculation.From the definition of CAF,the proposed algorithm cut the CAF function into short and coherent CAFs using phase correction factor,and then made approximate calculation in each short CAF.Compared with conventional CAF al-gorithm,the proposed algorithm reduces the computation time both from the short CAFs and the approximate calculation.It compared conventional CAF algorithm and the proposed algorithm under the same environment.Simulation results show the ef-fectiveness of the proposed algorithm.It can cut down the time consumption around 90%.关键词
互模糊函数/到达时差/到达频差/相干累加Key words
cross ambiguity function/frequency difference of arrival/time difference of arrival/coherent accumulative分类
信息技术与安全科学引用本文复制引用
张威,张更新,边东明..一种基于互模糊函数分段相干累加的TDOA／FDOA参数快速估计算法[J].计算机应用研究,2016,33(11):3408-3410,3.基金项目
国家自然科学基金资助项目 （）
