Flight Test Evaluation of an Alternative Local Area Augmentation System Architecture
Flight Test Evaluation of an Alternative Local Area Augmentation System Architecture
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DOI：
10.1002/j.2161-4296.1998.tb02369.x
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发表时间：
1998-03
影响因子：
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通讯作者：
B. Pervan;D. Lawrence;K. Gromov;G. Opshaug;J. Christie;P. Ko;A. Mitelman;S. Pullen;P. Enge;B. Parkinson
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文献类型：
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作者：
B. Pervan;D. Lawrence;K. Gromov;G. Opshaug;J. Christie;P. Ko;A. Mitelman;S. Pullen;P. Enge;B. Parkinson
已经开发了一种局域增强系统（LAAS）结构替代方案，为飞机精确进场和着陆提供基于卫星的导航。位于进近跑道两端的GPS卫星和地面机场伪卫星（APL）的差分码和载波相位测量值在飞机上进行最佳处理，以提高垂直性能。从操作意义上讲，这种性能改进将随着LAAS可用性的提高而实现。此外，一个新的完整性监测架构，介绍了LAAS参考接收机故障提供最严格的可实现的保护限制。为了证明概念LAAS体系结构是可实现的，在加州的莫菲特联邦机场实现了一个原型系统，用于在美国国家航空航天局（NASA）的Beechcraft King Air上进行飞行试验。在本文中，地面和空中组件的原型架构的实现进行了说明。1997年9月进行的空中国王飞行试验的实验结果表明，APL结构具有出色的导航性能，包括真实的95%的垂直导航误差为0.74米。
A Local Area Augmentation System (LAAS) architecture alternative has been developed to provide satellite-based navigation for aircraft precision approach and landing. Differential code and carrier phase measurements from GPS satellites and ground-based airport pseudolites (APLs), located at each end of the approach runway, are optimally processed at the aircraft to improve vertical performance. In an operational sense, this performance improvement would be realized as increased LAAS availability. In addition, a new integrity monitoring architecture is introduced to provide the tightest achievable protection limits with respect to LAAS reference receiver failures. To demonstrate that the notional LAAS architecture is realizable, a prototype system was implemented at Moffett Federal Airfield in California for flight testing on a National Aeronautics and Space Administration (NASA) Beechcraft King Air. In this paper, the ground and air components of the prototype architecture implementation are described. Experimental results from King Air flight trials performed in September 1997 show exceptional navigation performance with the APL architecture, including a 95 percent vertical navigation error of 0.74 m in real time.