GBAS integrity performance evaluation method based on pseudo-range error distribution model

A pseudo-range error and distribution model technology, applied in the field of satellite navigation, can solve the problems of reducing the accuracy of integrity risk probability values ​​and poor evaluation effectiveness, so as to achieve accurate integrity risk probability values, increase effectiveness, and improve accuracy Effect

Active Publication Date: 2019-06-18
BEIHANG UNIV
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Problems solved by technology

[0004] However, there is a problem of strong sample correlation in the evaluation of integrity performance in the prior art. In the case of a

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  • GBAS integrity performance evaluation method based on pseudo-range error distribution model
  • GBAS integrity performance evaluation method based on pseudo-range error distribution model
  • GBAS integrity performance evaluation method based on pseudo-range error distribution model

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[0048] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.

[0049] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps. The content of the present invention will be described below through specific embodiments, and a GBAS integrity performance evaluation method based on a pseudorange error distribution model of the present invention will be described through specific embodiments below. Due to the thick-tailed...

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Abstract

The invention provides a GBAS integrity performance evaluation method based on a pseudo-range error distribution model. The method is characterized in that an airborne receiving end collects pseudo-range error sample data for GBAS integrity performance evaluation, and comprises the following steps: a) grouping the pseudo-range error sample data; b) for each group of pseudo-range error samples, establishing a Gaussian kernel quadratic Gaussian polynomial tail distribution model; c) carrying out weighted sum on each group of pseudo-range error distribution model to obtain an overall pseudo-rangeerror distribution model; d) projecting the pseudo-range domain error to positioning domain error; e) calculating the probability that the positioning domain error is larger than an alarm limit to obtain an integrity risk probability value; and f) evaluating the integrity performance of a GBAS system. The GBAS integrity performance evaluation method based on the pseudo-range error distribution model improves calculation accuracy of the integrity risk probability value and improves effectiveness of integrity assessment.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a GBAS integrity performance evaluation method based on a pseudorange error distribution model. Background technique [0002] The Ground Based Augmentation System (Ground Based Augmentation, GBAS) realizes the enhancement of the positioning accuracy and the real-time monitoring of the integrity of the navigation signal by establishing the ground reference station with known position and performing differential processing on the ranging value. To evaluate whether the navigation service provided by the installed GBAS system in the local airspace (within the 50KM range centered on the GBAS ground station) meets the corresponding flight performance requirements needs to be investigated from four aspects: accuracy, continuity, integrity and availability. Among them, integrity is very important to ensure the safety of users, and it is the most concerned performance require...

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Application Information

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IPC IPC(8): G01S19/41G01S19/20
CPCG01S19/15G01S19/20G01S19/07G01S19/08G01S19/41G01S19/44
Inventor 王志鹏朱衍波宋鲁丹
Owner BEIHANG UNIV
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