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Beidou No.3 system user integrity processing optimization method and optimization device

A technology for system users and optimization methods, applied in measurement devices, radio wave measurement systems, satellite radio beacon positioning systems, etc. Solve the effect of high noise in pseudo-range observations and the inability to support vertical guidance

Active Publication Date: 2020-08-11
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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  • Beidou No.3 system user integrity processing optimization method and optimization device

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Embodiment 1

[0052] Please refer to the attached Figure 1-2 , the present invention provides a method for optimizing the user integrity of the Beidou No. 3 system, including:

[0053] S101: Using the acquired pseudo-range observation data, optimize the MHSS-based ARAIM algorithm by optimizing the distribution of false alarm probability and risk misleading information probability, and calculate user integrity;

[0054] S102: Utilize the obtained carrier phase observation data, and use the CRAIM algorithm in parallel to calculate the user integrity;

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

[0056] S104: When the PPP positioning result meets 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, adopt the integrity calculation result of the optimized ARAIM algorithm.

[0058] On the basis of the traditional RAIM algorithm, the pre...

Embodiment 2

[0126] Based on the same inventive concept, the embodiment of the present invention also provides an optimization device for BDS-3 system user integrity processing. Since the principle of the problem solved by this device is similar to the aforementioned optimization method for BDS-3 system user integrity processing, therefore For the implementation of the device, reference may be made to the implementation of the foregoing method, and repeated descriptions will not be repeated.

[0127] An embodiment of the present invention provides an optimization device for user integrity processing of the BDS-3 system, referring 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...

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Abstract

The invention discloses a Beidou No.3 system user integrity processing optimization method, which comprises the steps of optimizing an ARAIM algorithm based on MHSS by utilizing acquired pseudo-rangeobservation data and adopting a mode of optimizing false alarm probability and risk misleading information probability allocation, and calculating user integrity; calculating user integrity by using the acquired carrier phase observation data and a CRAIM algorithm in parallel; analyzing a calculation result of the PPP positioning error, and when the PPP positioning result meets a convergence condition, acquiring an integrity calculation result of the CRAIM algorithm; and when the PPP positioning result does not meet the convergence condition, acquiring the integrity calculation result of the ARAIM algorithm after optimization. According to the method, the problems that a traditional RAIM algorithm cannot meet the higher-level integrity requirement of civil aviation and the noise level of apseudo-range observation value is large are solved, and vertical positioning errors can be enveloped more compactly through the vertical protection level by comprehensively adopting the two types ofRAIM algorithms.

Description

technical field [0001] The invention belongs to the technical field of GNSS system integrity processing, and more specifically 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 is more effective in the case of a single satellite failure. 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. , and the odd-even vector method has a small amount of calculation, 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 algorithms have cert...

Claims

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Application Information

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Patent Type & Authority Applications(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