一种机场场面MLAT监视系统的目标状态检验方法  

An Airport Surface Target Static/Motion States Test Method Applied by MLAT Surveillance System

作　　者：彭卫[1,2] 黄荣顺[2] 唐斌[1,3] 王伟[2] 李恒[2] 

机构地区：[1]电子科技大学电子工程学院,四川成都611731 [2]中国民用航空总局第二研究所,四川成都610041 [3]成都航空职业技术学院,四川成都610100

出　　处：《四川大学学报（工程科学版）》2015年第6期84-90,共7页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金委员会与中国民用航空局联合资助项目(U1433129);四川省教育厅青年基金项目资助(13ZB0287);民航科技创新引导资金资助项目(14014J0340030)

摘　　要：由于GDOP(geometric dilution of precision)的影响,MLAT系统的定位噪声与目标几何位置有关,这将造成传统检验方法的性能下降。针对该问题,作者提出了一种应用于机场场面MLAT监视系统的目标静止/运动状态检验方法。通过所构造的归一化检验量,该方法可消除GDOP对检验性能的影响。所提方法的检验原理如下:当目标处于静止状态时,所构造的归一化检验量是中心化的Chi分布;当目标处于运动状态时,所构造的归一化检验量为非中心化的Chi分布。一种对应的滑动窗口检验方法被同时提出以便满足不同的性能要求。所提出方法经过了严格的理论推导和性能分析,并通过仿真实验证明了其有效性和合理性。该方法已在某机场实现了工程应用。Under the influence of geometric dilution of precision（ GDOP）,the localization noise of MLAT system relate directly to target＇s geometric position,which will degrade the performance of traditional test method. A test method of target stationary / motion state in the airport surface for MLAT surveillance system was proposed,which is able to eliminate GDOP effects by constructed the normalized statistic. And the principle of the proposed method is that when target is moving,the normalized statistic has a noncentral distribution,versus a central Chi-square distribution when target is static. Then a test method using sliding window was put forward in order to meet different performance requirements. The proposed methods were rigorously derived and analyzed in detail. Simulation results proved the effectiveness and rationality of the proposed method. The method has been applied into an airport project.

关 键 词：MLAT系统 假设检验 运动状态检验 滑窗 定位算法 

分 类 号：TN958.97[电子电信—信号与信息处理]