论文标题
ADS-B报告中无偿延迟的研究
A study of uncompensated latency in ADS-B reports
论文作者
论文摘要
ADS-B中的总延迟（TL）是GS上板上GPS测量的原始位置的真实TOA与ADS-B报告中的TOA之间的差异。我们处理了从芝加哥记录的Live Data提取的ADS-B报告，以在本报告中产生结果。我们观察到，我们的数据集中有99％的飞机是在非UTC耦合模式下广播的。对于这些飞机，星星专门使用ADS-B报告在可用时更新轨道。 DO-260B MOPS允许使用的非UNC耦合ADS-B报告的计算出的ULS在预算范围内（-200 ms至+400毫秒）。此外，两种方法的平均潜伏期小于+/- 50 ms。观察到从MTPE方法获得的潜伏期与ATPE方法的均值密切一致。大约1％的飞机以UTC耦合模式广播。这些飞机的报告被确定为具有不合规的链接版本，导致星星拒绝这些报告进行跟踪。此外，发现报告的位置和TOA是不同步的，这与拖把耦合操作的要求相抵触。
The total latency (TL) in ADS-B is the difference between the true TOA of the original position measured by the onboard GPS and the TOA in the ADS-B report at the GS. We processed the ADS-B reports extracted from live-data recorded at the Chicago to produce the results in this report. We observed that 99% of aircraft in our data set were broadcasting in non-UTC coupled mode. For these aircraft, STARS exclusively used ADS-B reports to update tracks when available. The calculated ULs for the non-UTC coupled ADS-B reports were well within the budget (-200 ms to +400 ms) allowed by the DO-260B MOPS. Moreover, the mean latencies from both methods were less than +/-50 ms. The latencies obtained from the MTPES method were observed to be in close agreement with the means from the ATPE method. About 1% of aircraft were broadcasting in UTC coupled mode. The reports from these aircraft were identified to have a non-compliant link version, causing STARS to reject these reports for tracking. Moreover, the reported position and TOA were found to be unsynchronized, which conflicts with the MOPS requirement for UTC coupled operation.
