| Citation: | JIN Kaiyan, ZHU Yanbo, XU Youchenet al. Error evaluation method of aircraft altimetry system based on ADS-B[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(4): 685-693. doi: 10.13700/j.bh.1001-5965.2016.0308(in Chinese)
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Aimed at the accurate evaluation of the altimetry system error for the automatic dependent surveillance-broadcast (ADS-B) height keeping performance monitoring, a data smoothing and fitting analysis method based on the kernel smoothing and mixed-Gaussian distribution was proposed. The kernel smoothing method for improving the resolution of the height data in the ADS-B messages was proposed. The optimal bandwidth of the data smoothing was analyzed. The analysis using real data demonstrates that this error evaluation method of the altimetry system is effective. To solve the problem that the two independent altimetry systems of an aircraft have different height keeping performance distribution characteristics, the fitting method based on the mixed-Gaussian distribution was proposed. The analysis using real data demonstrates that this method can accurately describe the double split peak characteristic of the aircraft altimetry system error. The proposed methods have been used in the analysis of Chinese RVSM aircraft height keeping performance. Evaluation results follow the requirements of International Civil Aviation Organization.
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