Journal of Computer Applications ›› 2013, Vol. 33 ›› Issue (05): 1470-1488.DOI: 10.3724/SP.J.1087.2013.01470

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

LU Yu1,2,3,WU Honggang3,XU Zili3   

  1. 1. College of Computer Science, Sichuan Normal University, Chengdu Sichuan 610101, China
    2. National Communication Laboratory, University of Electronic Science and Technology of China, Chengdu Sichuan 611731,China
    3. The Second Research Institute, Civil Aviation Administration of China, Chengdu Sichuan 610041,China
  • Received:2012-11-06 Revised:2013-01-01 Online:2013-05-01 Published:2013-05-08
  • Contact: LU Yu

基于TDOA残差分析的MLAT抗干扰方法

卢宇1,2,3,吴宏刚3,徐自励3   

  1. 1. 电子科技大学 通信抗干扰国家重点实验室,成都 611731
    2. 四川师范大学 计算机科学学院,成都 610101
    3. 中国民航总局 第二研究所,成都 610041
  • 通讯作者: 卢宇
  • 作者简介:卢宇(1979-),男,四川乐山人,讲师,博士,主要研究方向:目标检测与跟踪、多源数据融合;吴宏刚(1977-),男,四川乐山人,高级工程师,博士,主要研究方向:目标检测与跟踪;徐自励(1974-),男,贵州贵阳人,高级工程师,博士,主要研究方向:目标检测与跟踪。
  • 基金资助:

    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)

Abstract: 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.

Key words: Multilateration (MLAT), Time Difference Of Arrival (TDOA), anti-interference, surveillance, airport

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。

关键词: 多点定位, 接收时间差, 抗干扰, 监视, 机场

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