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Real-time data quality analysis method and system based on Beidou ground-based augmentation system

A ground-based augmentation system and real-time data technology, which is applied in the field of satellite navigation and positioning, can solve problems such as inability to analyze real-time data quality, complexity of satellite navigation system data quality analysis, and complex observation environment, and achieve easy downward compatibility and expansion and the effect of the upgrade function

Pending Publication Date: 2022-05-27
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

150 national framework network reference stations of the Beidou Ground-Based Augmentation System have been built, using multi-mode multi-frequency receivers and antenna equipment provided by 6 domestic manufacturers. The performance indicators and stability of these domestic equipment are comparable to those of GPS (Global Positioning There are differences in the quality of the output data (observation data and navigation messages), which leads to the complexity of the data quality analysis of each satellite navigation system, and the data quality is the prerequisite for the follow-up Beidou ground-based augmentation system to provide high-quality services. Therefore, It is necessary to carry out the research on the data quality analysis method of the Beidou ground-based augmentation system, which can fill the gap in the data quality analysis of the Beidou ground-based augmentation system and support the continuous and stable operation of the Beidou ground-based augmentation system
[0004] Research on data quality analysis algorithm indicators at home and abroad is becoming mature, but the Beidou ground-based augmentation system uses hardware equipment provided by multiple manufacturers, the observation environment is complex, and real-time data quality analysis cannot be performed

Method used

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Embodiment 1

[0054] See figure 1 , figure 1 It is a flow chart of a real-time data quality analysis method based on the Beidou ground-based enhancement system provided by an embodiment of the present invention. The real-time data quality analysis method includes:

[0055] S1: Receive the real-time data stream connecting all the base stations connected to the Beidou ground-based augmentation system;

[0056] In this embodiment, step S1 specifically includes:

[0057] S11: Load a map, and display the location information of each reference station on the map in real time;

[0058] A map is displayed on the front-end display of the Beidou ground-based augmentation system. The map can display and mark the location information of each reference station, and the map can be zoomed in and out.

[0059] S12: Receive real-time data streams of all base stations connected to the Beidou ground-based augmentation system at preset time intervals, where the real-time data streams include real-time obse...

Embodiment 2

[0081] On the basis of the above embodiment, this embodiment provides a real-time data quality analysis system based on the Beidou ground-based augmentation system, such as Image 6As shown, the real-time data quality analysis system includes a real-time data receiving module 1, a data transmission detection module 2, a data quality analysis module 3 and a display module 4, wherein the real-time data receiving module 1 is used to receive all the The real-time data flow of the base station; the data transmission detection module 2 is used to regularly monitor whether each base station is disconnected from the Beidou ground-based augmentation system and display and update the connection status of each base station; the data quality analysis module 3 is used to monitor the real-time data flow. Decoding is performed, and the relevant observation indicators of the corresponding base station are calculated according to the decoded data; the display module 4 is used to display and upd...

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Abstract

The invention discloses a real-time data quality analysis method and system based on a Beidou ground-based augmentation system. The method comprises the following steps: receiving real-time data streams of all reference stations connected with the Beidou ground-based augmentation system; regularly monitoring whether each reference station is disconnected with the Beidou ground-based augmentation system or not, and displaying and updating the connection state of each reference station; decoding the real-time data stream, and calculating a related observation index of the corresponding reference station according to the decoded data; and displaying and updating the state and related observation indexes of each reference station in real time. According to the method, each base station of the Beidou ground-based augmentation system can be analyzed in real time, station operation and maintenance logs are generated in time, station data quality is effectively analyzed, station operation problems are found and corrected in time, and external service use of ground-based augmentation system data is supported.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation and positioning, and in particular relates to a real-time data quality analysis method and system based on a Beidou ground-based augmentation system. Background technique [0002] GNSS (Global Navigation Satellite System, Global Navigation Satellite System) can provide high-quality positioning, navigation and timing services to global users, and plays a vital role in various fields. The collected observational data is analyzed for data quality. Through statistical analysis and comparative analysis of the observational data quality analysis results, users can fully grasp the influence of different factors on the quality of GNSS observational data, and provide information for refining error correction models, function models, etc. refer to. The quality of observation data can be reflected by indicators such as data integrity, multipath effect and observation noise, signal-to-noise rati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/42
CPCG01S19/42Y02D30/70
Inventor 沈朋礼成芳肖厦卢晓春李艳红刘东亮李晓婉
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI