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计算机工程

• 开发研究与工程应用 • 上一篇    

基于最小二乘与Taylor 级数展开的新型混合定位方法

FANG Shu  a ,NI Yude  b ,LIU Yi  b ,CHANG Yingxin  a ,WU Tiancheng  a   

  1. (中国民航大学a. 中欧学院;b. 电子信息工程学院,天津300300)
  • 收稿日期:2014-07-25 出版日期:2015-06-15 发布日期:2015-06-15
  • 作者简介:方 姝(1991 - ),女,硕士研究生,主研方向:机载电子,空管系统;倪育德,教授;刘 逸、常瀛心、吴添成,硕士研究生。
  • 基金资助:

    中央高校基本科研业务费专项基金资助项目(ZXH2011C013);国家空中交通管制委员会科研委基金资助项目(GKG201410004)。

New Method of Hybrid Location Based on Least Square and Taylor Series Expansion

FANG Shu a ,NI Yude b ,LIU Yi b ,CHANG Yingxin a ,WU Tiancheng a   

  1. (a. Sino-European Institute; b. College of Electronic Information Engineering, Civil Aviation University of China,Tianjin 300300,China)
  • Received:2014-07-25 Online:2015-06-15 Published:2015-06-15

摘要:

针对广播式自动相关监视系统中的虚假目标识别问题,采用一种到达时间差与到达时间和2 种定位方法相结合的新型混合定位方法,获取目标真实空间位置,将其与自动相关监视报文中的位置数据进行比对来判断虚假目标。为使混合定位更加精确与快速,利用最小二乘法对目标初始定位,再将其作为Taylor 级数展开迭代的初值,精确估计目标位置。模拟仿真结果表明,混合定位方法解决了Taylor 级数展开算法中结果可能不收敛的问题, 且在相同地面站布局条件下,其精度和稳定性较传统到达时间差定位方法更高。

关键词: 到达时间和, 到达时间差, 混合定位, Taylor 级数展开, 最小二乘

Abstract:

In order to identify spoof target in Automatic Dependent Surveillance Broadcast (ADS-B) system,a new hybrid location method is proposed by combining Time Difference of Arrival(TDOA) and Time Sum of Arrival(TSOA) to obtain the real space location,identify the spoof target by comparing with the location data in ADS-B message. In order to effectively improve location accuracy,in this paper,the least square algorithm is used to get initial location result, acting as the initial value in Taylor series iteration to get accuracy results. Simulation results show that this mixed algorithm can solve the convergence problem of Taylor method. With the same arrangement of ground stations,the new hybrid method shows better accuracy and is more stable than traditional TDOA location method.

Key words: Time Sum of Arrival ( TSOA), Time Difference of Arrival ( TDOA ), hybrid location, Taylor series expansion, Least Square(LS)

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