{'fraction_non_alphanumeric': 0.015174506828528073, 'fraction_numerical': 0.0, 'mean_word_length': 5.285714285714286, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Analysis on the Deviation of Final Approach Path Based on Satellite Navigation

Performance-based navigation (PBN) is a new navigation technology which proposed by ICAO, It uses satellite navigation technology to guide the aircraft to fly, but in practice the final approach track and the track design there is a certain bias. This paper analyzes the reasons for the existence of track deviation and uses Bessel geodetic algorithm to calculate track parameters, the results show that the method is simple and practical, which can effectively reduce track deviation, and can be reduced to the navigation accuracy error tolerance specification within the range.