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A Probability-Base Alerting Logic for Aircraft on Parallel Approach
| 题名： | A Probability-Base Alerting Logic for Aircraft on Parallel Approach |
| 作者： | Carpenter, Brenda D.; Kuchar, James K. |
| 关键词： | parallel；logic；craft；proa；rtin；prob；base；alerts；scenarios；evaluation |
| 摘要： | This document discusses the development and evaluation of an airborne collision alerting logic for aircraft on closely-spaced approaches to parallel runways. A novel methodology is used when links alerts to collision probabilities alerting thresholds are set such that when the probability of a collision exceeds an acceptable hazard level an alert is issued. The logic was designed to limit the hazard level to that estimated for the Precision Runway Monitoring system one accident in every one thousand blunders which trigger alerts. When the aircraft were constrained to be coaltitude, evaluations of a two-dimensional version of the alerting logic show that the achieved hazard level is approximately one accident in every 250 blunders. Problematic scenarios have been identified and corrections to the logic can be made. The evaluations also show that over eighty percent of all unnecessary alerts were issued during scenarios in which the miss distance would have been less than 1000 ft, indicating that the alerts may have been justified. Also, no unnecessary alerts were generated during normal approaches. |
| 报告类型： | 科技报告 |
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