多向性
统计的
职位(财务)
计算机科学
共发射极
到达时间
度量(数据仓库)
统计
实时计算
电信
数据挖掘
数学
电子工程
工程类
方位角
无线
经济
财务
几何学
作者
Junichi Naganawa,Hiromi Miyazaki
出处
期刊:IEEE Access
[Institute of Electrical and Electronics Engineers]
日期:2022-01-01
卷期号:10: 97276-97288
被引量:3
标识
DOI:10.1109/access.2022.3204943
摘要
Automatic Dependent Surveillance-Broadcast (ADS-B) is an emerging means of aeronautical surveillance for air traffic control.Aircraft periodically broadcast positional updates to ground stations.Although ADS-B outperforms traditional radars in terms of accuracy and update rate, positional verification-a technique used to check the validity of the position report-is necessary to counter anomalies.In this study, two different methods were compared when the ground stations measure time difference of arrival (TDOA).One is direct; the test statistic is essentially the difference between the measurement and a prediction calculated from the position report.Another method is multilateration (MLAT)-based and two-step; the emitter position is firstly estimated, whereupon the difference between the estimated and reported positions constitutes the test statistic.As a result of the comparison, a performance difference, which depending on the number of receivers, was revealed.This is an useful suggestion for implementing ADS-B when the existing multilateration infrastructure is exploited.
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