基于TDOA残差分析的多点定位抗干扰方法  

Anti-interference method based on TDOA residual error in multilateration system

作　　者：卢宇[1,2,3] 吴宏刚[3] 徐自励[3] 

机构地区：[1]四川师范大学计算机科学学院,成都610101 [2]电子科技大学通信抗干扰国家重点实验室,成都611731 [3]中国民航总局第二研究所,成都610041

出　　处：《计算机应用》2013年第5期1470-1472,1488,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(61079006);国家科技支撑计划项目(2011BAH24B06);四川省教育厅项目(11ZB071)

摘　　要：针对多点定位(MLAT)技术对信号从目标到接收站点时间差(TDOA)的依赖性及其TDOA精度对定位精度的影响,提出了一种基于TDOA残差分析的定位抗干扰方法。该方法通过TDOA在定位前后的残差来评判接收站点的时钟精度,从而实现站点优化选择和抗干扰,达到提高定位精度的目的。仿真实验和机场真实数据实验表明该方法可以显著提升MLAT的定位精度,不仅可行,而且有效。In view of the fact that Multilateration （MLAT） technique locates the target according to the Time Difference Of Arrival （TDOA） from target to each station and the fact that the precision of clock in each station is crucial to the precision of target locating, an anti-interference method based on the residual error of TDOA was proposed. It estimated the clock precision of each station by the residual error, and archived the goal of the optimal stations selection and the locating precision improvement. The experimental results based on both simulation and practical data illustrate the proposed method can significantly enhance the locating precision, not only feasible but also effective.

关 键 词：多点定位 接收时间差 抗干扰 监视 机场 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]