摘要
对于机场场面时差(TDOA)定位系统,一旦某个远端站的到达时间检测误差突增,将会对定位精度产生致命影响。提出了一种新的站点优选方法,首先采用平滑滤波估计目标真实位置,再以该估计值为基准进行测量位置与时差的偏差统计判决,从而快速地确定发生故障的站点。针对特定机场的蒙特卡洛仿真试验证明了该方法的有效性。
For a muhilateration （MLAT） system of TDOA （ Time Difference of Arrival） for airport surface surveillance, if one of MLAT stations meets proliferation of time measurement error, it will lead to considerable reduction of position precision. Thus a new method of station selection is presented in this paper for quickly determining which station has excess time error. Firstly target positions are estimated by smooth filtering, then accumulative error judgments for position and TDOA measurements are made based on estimation values. And Monte - Carlo simulations for a specific airport show the validity of the method.
出处
《电讯技术》
北大核心
2009年第12期5-8,共4页
Telecommunication Engineering
基金
国家高技术研究发展计划(863计划)项目(2009AA12Z329)
国家自然科学基金资助项目(60672176
60736045)
关键词
机场场面监视
多点定位
平滑滤波
站点优选
仿真
airport surface surveillance
multilateration
smooth filtering
station selection
simulation
