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An optimization method and optimization device for user integrity processing of Beidou-3 system

A technology for system users and optimization methods, applied in the directions of measurement devices, radio wave measurement systems, satellite radio beacon positioning systems, etc. Effect

Active Publication Date: 2022-07-08
BEIHANG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides an optimization method and an optimization device for Beidou-3 system user integrity processing. Using a reasonable ARAIM algorithm, the aircraft can be guided to 200 feet (about 60m) from the ground with the required navigation performance. ) high LPV, that is, LPV-200, the use of CRAIM algorithm can solve the problem of large noise in pseudorange observations to a certain extent

Method used

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  • An optimization method and optimization device for user integrity processing of Beidou-3 system
  • An optimization method and optimization device for user integrity processing of Beidou-3 system
  • An optimization method and optimization device for user integrity processing of Beidou-3 system

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Embodiment 1

[0052] Please see attached Figure 1-2 , the present invention provides a kind of Beidou No. 3 system user integrity processing optimization method, including:

[0053] S101: Using the obtained pseudorange observation data, optimize the distribution of the probability of false alarms and the probability of dangerous misleading information, optimize the ARAIM algorithm based on MHSS, and calculate the user integrity;

[0054] S102: Using the acquired carrier phase observation data, the CRAIM algorithm is used in parallel to calculate the user integrity;

[0055] S103: analyze the calculation result of the PPP positioning error;

[0056] S104: When the PPP positioning result satisfies the convergence condition, adopt the integrity calculation result of the CRAIM algorithm;

[0057] S105: When the PPP positioning result does not meet the convergence condition, the integrity calculation result of the ARAIM algorithm after optimization is adopted.

[0058] On the basis of the tr...

Embodiment 2

[0126] Based on the same inventive concept, the embodiment of the present invention also provides an optimization device for Beidou-3 system user integrity processing. For the implementation of the apparatus, reference may be made to the implementation of the foregoing method, and repeated descriptions will not be repeated.

[0127] The embodiment of the present invention provides an optimization device for the user integrity processing of the Beidou No. 3 system, refer to image 3 shown, including:

[0128] The optimized ARAIM calculation module 31 is used to output the positioning result when the SPP algorithm is adopted and the VPL calculation result when the ARAIM optimization algorithm is adopted;

[0129] The CRAIM calculation module 32 is used to output the positioning result when the PPP algorithm is adopted and the VPL calculation result when the CRAIM algorithm is adopted;

[0130] The output module 33 is configured to determine whether the PPP positioning result ...

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Abstract

The invention discloses an optimization method for user integrity processing of the Beidou No. 3 system, which comprises using the obtained pseudo-range observation data to optimize the distribution of the probability of false alarm and the probability of dangerous misleading information to optimize the ARAIM algorithm based on MHSS , calculate the user integrity; use the acquired carrier phase observation data, and use the CRAIM algorithm to calculate the user integrity in parallel; analyze the calculation results of the PPP positioning error, when the PPP positioning results meet the convergence conditions, the integrity calculation results of the CRAIM algorithm are used; When the PPP positioning result does not meet the convergence conditions, the integrity calculation result of the ARAIM algorithm after optimization is accepted. The invention solves the two problems that the traditional RAIM algorithm cannot meet the higher-level integrity requirements of civil aviation and the noise level of the pseudo-range observation value is relatively large, and the comprehensive use of two types of RAIM algorithms can realize that the vertical protection level is tighter to the vertical positioning error The resulting envelope.

Description

technical field [0001] The invention belongs to the technical field of GNSS system integrity processing, and more particularly relates to an optimization method and an optimization device for Beidou-3 system user integrity processing. Background technique [0002] In GNSS systems, user-level integrity monitoring usually refers to various receiver autonomous integrity monitoring (RAIM) algorithms. The traditional RAIM algorithm has obvious application effect in the case of a single satellite failure. The typical algorithms mainly include the pseudorange comparison method proposed by Y. Lee, the least square residual method proposed by B.W. Parkinson, and the parity vector method proposed by M.A.Sturza, etc. , in which the parity vector method requires less computation, so it is widely used by users. In order to improve the performance of the traditional RAIM algorithm, scholars from various countries have revised it theoretically, but the traditional and improved RAIM algori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/23
CPCG01S19/23Y02D30/70
Inventor 赵龙周建华陈志鹏胡彩波张且且赵鹤冯炜闫芳君
Owner BEIHANG UNIV