基于ADS-B数据的多点定位系统监视性能评估方法  

Multipoint Positioning System Performance Evaluation Methods Based on ADS-B Data

作　　者：李华 李家蓬 于琦 安强 Li Hua

机构地区：[1]北京空管工程技术有限公司,北京100621 [2]四川九洲空管科技有限责任公司,四川绵阳621000

出　　处：《工业控制计算机》2023年第12期102-104,106,共4页Industrial Control Computer

摘　　要：基于中国民用航空总局空中交通管理局已经建设完成的现有ADS-B站点,选取符合基于信号到达时间差(Time Difference of Arrival,TDOA)定位体制的多点定位系统定位条件的站点,首先从理论上分析了其定位精度情况,然后在集中监控端采集相应站点记录的CAT021报文,提取报文中的高精度时间进行各个站点时间差汇算,并结合各个站点的相对几何位置,利用TDOA定位解算算法计算出目标的位置,用实际数据分析解算位置与CAT021报文中携带的位置的误差来分析当前定位精度覆盖情况。最后指出该评估方法可为后期进行多点定位系统建设和布站提供建设性意见的可行性。Based on the existing ADS-B sites built by the Air Traffic Management Bureau of Civil Aviation Administration of China,this paper selects the sites meeting the positioning conditions of the Multipoint Positioning system based on the time difference of arrival positioning system.Firstly,the positioning accuracy is analyzed theoretically,then extract the high-precision time in the CAT021 messages recorded by the corresponding sites,combined with the relative geometric position of each site,then can calculate the location of the target using TDOA positioning algorithm.The actual data is used to analyze positioning accuracy coverage according the error between the Calculating position and the position carried in CAT021 message.Finally,it point out the feasibility for construction and distribution of Multipoint Positioning system in the future.

关 键 词：信号到达时间差 多点定位系统 定位性能 布站 

分 类 号：V355[航空宇航科学与技术—人机与环境工程]