Investigating Effects of Well Clear Definitions on UAS Sense-And-Avoid Operations in Enroute and Transition Airspace
Investigating Effects of Well Clear Definitions on UAS Sense-And-Avoid Operations in Enroute and Transition Airspace
复制标题
研究明确定义对无人机航路和转场空域感知与回避操作的影响
DOI：
10.2514/6.2013-4308
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发表时间：
2013
影响因子：
4.1
通讯作者：
E. Mueller
中科院分区：
文献类型：
--
作者：
Seung Man Lee;Chunki Park;Marcus Johnson;E. Mueller
无人驾驶飞机系统（UAS）将被要求配备感知和规避（SAA）系统，以满足监管要求，保持“良好的清晰”的其他空中交通。本研究调查的影响，不同的良好清除指标上的良好清除违规率和评估的分布的飞机之间的距离在一个良好清除违规在高海拔航路空域。第一个分析确定的预测率，在违反良好的清除将发生在UAS和载人飞机之间的仪表飞行规则下运行，指示的频率与感测和避免系统将创建一个滋扰警报。这种分析是在有和没有空中交通管制（ATC）分离提供服务的算法模型的情况下进行的。第二种分析确定基于时间的清晰度量与违规发生的范围之间的关系，这种关系可以告知所需的SAA监视范围和违规发生的频率，尽管ATC间隔标准仍然保持。这些分析是在一天内使用整个美国空中交通系统的快速模拟能力进行的，包括3000架无人机和50，000多架有人驾驶飞机。结果表明，在没有任何间隔规定的情况下，无人机系统每6小时才遇到一架射程τ（定义为相对射程与射程速率之比）为60秒的有人驾驶飞机。大约75%的这种相遇将发生在ATC间隔标准5海里之外。
Unmanned aircraft systems (UAS) will be required to equip with sense-and-avoid (SAA) systems in order to fulfill the regulatory requirement to remain “well clear” of other air traffic. This study investigates the effects that different well-clear metrics have on the rate of well-clear violations and evaluates the distribution of distances between aircraft at a wellclear violation in high-altitude enroute airspace. The first analysis determines the predicted rate at which violations of well clear would occur between UAS and manned aircraft operating under instrument flight rules, indicating the frequency with which a sense-andavoid system would create a nuisance alert. This analysis is done both with and without an algorithmic model of air traffic control (ATC) separation provision services. The second analysis determines the relationship between time-based well-clear metrics and the range at which the violation would occur, a relationship that may inform the required SAA surveillance range and the frequency with which violations would occur despite ATC separation standards still being maintained. The analyses are carried out using a fast-time simulation capability of the entire US air traffic system over a single day, including 3000 UAS and more than 50,000 manned aircraft. Results indicate that, without any separation provision, a UAS would encounter a manned aircraft with a range tau (defined as the ratio of the relative range to range rate) of 60 seconds only every six hours. Approximately 75% of such encounters would occur outside the ATC separation standard of 5 nmi.