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GBAS integrity performance evaluation method based on pseudorange error distribution model
GBAS integrity performance evaluation method based on pseudorange error distribution model
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机译:基于伪距误差分布模型的GBAS完整性性能评估方法
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摘要
The present invention provides a ground-based augmentation system (GBAS) integrity performance evaluation method based on a pseudorange error distribution model, including: an airborne receiver terminal performing GBAS integrity performance evaluation by acquiring pseudorange error sample data, including the following method steps: a) grouping the pseudorange error sample data; b) building a distribution model having a Gaussian kernel and quadratic Gaussian polynomial tails for each group of pseudorange error samples; c) calculating a weighted sum of the distribution model of each group of pseudorange errors, to obtain an overall pseudorange error distribution model; d) projecting the pseudorange errors to position domain errors; e) calculating a probability that a position domain error is greater than an alarm limit, to obtain an integrity risk probability value; and f) evaluating GBAS integrity performance. The method improves the calculation accuracy of the integrity risk probability value and enhances the effectiveness of integrity evaluation.
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