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WO2018161605A1 - Système de station de référence fonctionnant en continu - Google Patents

Système de station de référence fonctionnant en continu Download PDF

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Publication number
WO2018161605A1
WO2018161605A1 PCT/CN2017/107412 CN2017107412W WO2018161605A1 WO 2018161605 A1 WO2018161605 A1 WO 2018161605A1 CN 2017107412 W CN2017107412 W CN 2017107412W WO 2018161605 A1 WO2018161605 A1 WO 2018161605A1
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WIPO (PCT)
Prior art keywords
data
subsystem
reference station
client application
station system
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Ceased
Application number
PCT/CN2017/107412
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English (en)
Chinese (zh)
Inventor
叶雷
王浩
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Pacific Telecom and Navigation Ltd
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Pacific Telecom and Navigation Ltd
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Publication date
Application filed by Pacific Telecom and Navigation Ltd filed Critical Pacific Telecom and Navigation Ltd
Publication of WO2018161605A1 publication Critical patent/WO2018161605A1/fr
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/07—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections

Definitions

  • the present application relates to the field of satellite communications, and more particularly to a continuous operation reference station system.
  • Differential positioning technology is an important geospatial infrastructure.
  • the differential positioning technology system is to deploy a number of global navigation satellite systems (GNSS) continuous operation base stations in a certain area (usually the administrative level above the county level) to model the regional GNSS positioning error as a whole, through the wireless data communication network.
  • GNSS global navigation satellite systems
  • the user broadcasts the positioning enhancement information to increase the positioning accuracy of the user terminal from 3-10 meters to 2-3 cm, and the positioning accuracy is evenly distributed, the real-time performance is high, and the reliability is high; meanwhile, the differential positioning technology system is regional high-precision and dynamic.
  • GNSS Global System for Mobile Communications
  • GLONASS Global System for Mobile Communications
  • Compass in China
  • Galileo in the European Union
  • Satellite-Based Augmentation System The current GNSS has evolved from a single satellite constellation GPS navigation system to a multi-satellite constellation GNSS navigation system.
  • GNSS includes the US GPS, GLONASS in Russia, Compass in China, and Galileo in the European Union, as well as the Satellite-Based Augmentation System.
  • SBAS including the US Wide Area Augmentation System (WAAS), Europe's European Geostationary Navigation Overlay Service (EGNOS), Russia's Differential Correction and Monitoring System Station (SDCM), Japan Quasi-Zenith Satellite System (QZSS) and Multi-Functional Satellite Augmentation System (MSAS), India's Indian Regional Navigation Satellite System (IRNSS) and GPS-assisted static orbit enhancement
  • WAAS Wide Area Augmentation System
  • ENOS European Geostationary Navigation Overlay Service
  • SDCM Differential Correction and Monitoring System Station
  • QZSS Japan Quasi-Zenith Satellite System
  • MSAS Multi-Functional Satellite Augmentation System
  • GAGAN The navigation system
  • GAGAN Nigeria's Nigerian Communication Satellite-1
  • NaComSat-1 Nigerian Communication Satellite-1
  • Beidou satellite navigation system is a self-developed, independent global satellite navigation system being implemented in China.
  • Beidou satellite navigation system can be compatible with GPS, GLONASS and other systems.
  • the 120-channel receiver in the continuous operation of the reference station system is not fully compatible with the Beidou satellite navigation system.
  • the embodiment of the present application provides a continuous operation reference station system, which is used to solve the technical problem that the continuous operation reference station system in the prior art cannot be fully compatible with the Beidou satellite navigation system.
  • a continuously operating reference station system including: a reference station subsystem, a data center subsystem, a data communication subsystem, and a client application subsystem;
  • the reference station subsystem includes a plurality of reference stations
  • the reference station includes: a 220-channel GNSS receiver compatible with the frequency band B1 and the frequency band B3 of the Beidou-2 satellite navigation system, and transmits the received satellite positioning data to the data center subsystem;
  • the data center subsystem includes: a data storage device, Preserving global IGS and GNSS reference station data; the data processing device obtaining correction data of the satellite positioning data according to the global IGS and GNSS reference station data; and the network device transmitting the satellite positioning data to the data processing device and transmitting
  • the data communication subsystem comprises: a mobile communication device, transmitting the correction data to the client application subsystem through the mobile data network; and the internet communication device transmitting the correction data to the client application via the Internet System;
  • the client application subsystem includes
  • the GNSS receiver of the continuous operation reference station system is compatible with all frequency points of the Beidou-2 satellite navigation system (BD2) frequency band B1 and the frequency band B3, and the GNSS receiver signal processing reaches 220 channels and can receive GPS L1/L2/L5 full-cycle carrier, GLONASS L1/L2 full-cycle carrier, wide-area differential SBAS (MSAS/WAAS/EGNOS) and Galileo and other four GNSS navigation systems make the measurement data in the field more accurate and reliable.
  • BD2 satellite navigation system BD2 satellite navigation system
  • the GNSS receiver signal processing reaches 220 channels and can receive GPS L1/L2/L5 full-cycle carrier, GLONASS L1/L2 full-cycle carrier, wide-area differential SBAS (MSAS/WAAS/EGNOS) and Galileo and other four GNSS navigation systems make the measurement data in the field more accurate and reliable.
  • FIG. 1 is a schematic structural diagram of a continuous operation reference station system provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a continuous operation reference station system provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a continuous operation reference station system provided by an embodiment of the present application.
  • circuit refers to a conductive loop formed by at least one component or subcircuit by electrical or electromagnetic connection.
  • element or circuit When an element or circuit is referred to as “connected to” another element or the element / circuit is “connected” between the two means, it may be directly coupled or connected to the other element or Connections can be physical, logical, or a combination thereof.
  • an element when referred to as being “directly coupled” or “directly connected” to another element, it is meant that there are no intervening elements.
  • the GNSS receiver of the Continuous Operational Reference System (CORS) provided by the embodiment of the present application is compatible with all frequency points of the B1 and B3 of the Beidou-2 satellite navigation system (BD2), and the signal processing of the GNSS receiver is achieved.
  • 220 channels capable of receiving GPS L1/L2/L5 full-cycle carrier, GLONASS L1/L2 full-cycle carrier, wide-area differential SBAS (MSAS/WAAS/EGNOS) and Galileo and other four GNSS navigation systems, making measurement data more accurate in the field ,reliable.
  • CORS data processing equipment can also use a distributed processing server cluster to collect information such as ephemeris, clock error, ionospheric correction information, and positioning deviation from multiple information sources for information fusion and joint solution, and to calculate correction data (Correction Data) faster and more accurate.
  • a distributed processing server cluster to collect information such as ephemeris, clock error, ionospheric correction information, and positioning deviation from multiple information sources for information fusion and joint solution, and to calculate correction data (Correction Data) faster and more accurate.
  • FIG. 1 is a schematic structural diagram of a CORS provided by an application embodiment, including a reference station subsystem 10, a data center subsystem 11, a data communication subsystem 12, and a client application subsystem 13.
  • the reference station subsystem 10 includes a plurality of reference stations 101, each located in a different area, and the reference station 101 is also referred to as a differential positioning reference station.
  • Each reference station 101 internally includes a GNSS receiver that receives satellite positioning data from the satellite.
  • the GNSS receiver is compatible with all frequency points of Band B1 and Band B3 of BD2, and the signal processing reaches 220 channels, which is fully compatible with the satellite positioning function of BD2.
  • the GNSS receiver transmits the received satellite positioning data to the data center subsystem 11.
  • the data center subsystem 11 includes a data storage device 111, a data processing device 112, and a network device 113.
  • the storage capacity of the data storage device 111 is capable of storing 24-day 1 second sampling rate data and corresponding value-added service data for preserving global International GPS Service (IGS) and GNSS reference station data.
  • the data processing device 112 obtains corrected data of the satellite positioning data according to the global IGS and GNSS reference station data and through a preset algorithm.
  • the network device 113 transmits the satellite positioning data received by the GNSS receiver to the data processing device 112 and transmits the corrected data to the data communication subsystem 12.
  • the data communication subsystem 12 includes a mobile communication device 121 and an internet communication device 122.
  • the mobile communication device 121 transmits the correction data to the client application subsystem 13 via the mobile data network; the internet communication device 122 transmits the correction data to the client application subsystem 13 via the Internet.
  • the client application subsystem 13 includes a plurality of terminal devices 131 that use the received correction data to display corresponding positioning results.
  • the terminal device 131 may be one or more of a computer, a mobile phone, a tablet computer, a mapping device, and a handheld device.
  • the CORS of this embodiment is fully compatible with the satellite positioning function of BD2.
  • the satellite positioning function of BD2 has various advantages: (1) has positioning and communication functions, and does not require support from other communication systems, and GPS can only be positioned; (2) coverage The scope is large. At present, BD2 seamlessly covers the Asia-Pacific region, and the coverage effect is better than GPS; (3) It is especially suitable for large-scale monitoring management and data collection of group users; (4) China's autonomous system is safe, reliable, stable, and has strong confidentiality. Suitable for key department applications.
  • the BD2 satellite navigation system Compared with GPS, the BD2 satellite navigation system not only designs 27 global satellites, but also designs 5 geosynchronous satellites and 3 geostationary orbit satellites over the country (using the Earth as a reference, centering on China, going back and forth to the north and south hemispheres). Rotating), so that the application of BD2 in the Asia- Pacific region is far better than GPS, especially in high-occlusion areas or occlusion environments.
  • the CORS provided in this embodiment can also be compatible with positioning systems such as BD2, GPS, GLONASS, and Galileo.
  • the design of the BD2 signal is mainly compatible with GPS, GLONASS and Galileo signals, which is conducive to improving the reliability of constellations in China and surrounding coverage.
  • the principle of star selection is: BD2 is preferred, followed by GPS, GLONASS, Galileo and other constellation satellites. In this basic principle, the balance between positioning accuracy and calculation amount is maintained during the actual star selection, which not only ensures the selection of the satellite combination with the smallest Geometric Dilution of Precision (GDOP), but also the calculation amount and operation speed.
  • GDOP Geometric Dilution of Precision
  • the GNSS receivers in each reference station 101 are full-band GNSS receivers compatible with BD2, GPS, GLONASS, and Galileo, so the GNSS receiver supporting the four-star full-band requires a better-performance processor and motherboard.
  • the processor is preferably a Cortex-M3 processor, using ARM's latest instruction set architecture, which uses Thumb-2 technology to reduce GNSS receiver memory utilization by 31%, performance by 38%, and enable smaller chip area. , to facilitate the integration of more features.
  • the motherboard is fully compatible with BD2 system signals, supports Samsung solution, and reserves the Galileo signal channel. Tracking GIOVE-A and GIOVE-B test satellites for signal processing, experimental purposes, compact package, low power consumption (1.5W only), and support for Ethernet, USB, RS232 and CAN interface connections.
  • the client application subsystem 13 further includes a Beidou RDSS user machine 132 (which may also be a Beidou RNSS user machine or a dual mode user machine that is compatible with both RDSS and RNSS).
  • a Beidou RDSS user machine 132 which may also be a Beidou RNSS user machine or a dual mode user machine that is compatible with both RDSS and RNSS.
  • the user machine 132 receives the corrected data from the data communication subsystem 12, at which time the data communication subsystem 12 also transmits the data to the Beidou RDSS user machine 132 of the client application subsystem 13 by the corresponding RF transceiver 123.
  • the Beidou RDSS user machine can establish a communication connection with the terminal device 131 through the RS232 interface, and send the received correction data to the terminal device 131 for display.
  • Beidou RDSS user machine 132 has low power consumption and small size, which can be used in handheld mode. It is suitable for working conditions in harsh outdoor environments, waterproof, dustproof, stable and reliable.
  • the reference station 101 since the reference station 101 is exposed to the outdoor environment for a long period of time, and sometimes is placed in a relatively harsh field environment, it is necessary to provide high protection to the GNSS receiver and circuit inside the reference station 101. Ensure that its work is stable and reliable. Therefore, the inner cavity formed by the outer casing of the GNSS receiver is filled with argon gas, which is an inert gas. Under normal conditions, it is difficult to participate in the reaction with other elements or compounds, and the contact between the internal components of the GNSS receiver and the outside can be isolated. It prevents oxidation of internal components, maintains stable parameters, and is easy to detect and control, thereby improving the stability of the instrument, and argon is easy to prepare and low in cost.
  • argon gas which is an inert gas
  • data processing device 112 of data center subsystem 11 is a distributed data processing server cluster.
  • the distributed data processing server cluster is used to solve the differential correction data, and the information such as ephemeris, clock error, ionospheric correction information, and positioning deviation from multiple information sources are collected for information fusion and joint solution, and the correction data is calculated faster and more accurately.
  • Cloud server computing is a large-scale distributed computing platform that integrates storage and computing. It has good scalability. It can adjust the size of sub-cluster and change the evolution strategy according to the size of the server cluster and the calculation of tasks. Means to further optimize the performance of the algorithm.
  • the CORS also includes a value added service subsystem 14.
  • Value-added services include one or more of navigation, meteorology, and geology.
  • the value-added service subsystem 14 further includes a value-added service data storage device 141 and a network device 142; the value-added service data storage device 141 is configured to store the continuously updated value-added service data, and send the updated value-added service data to the data center through the network device 142.
  • the data center subsystem 11 establishes a pair of correction data and value-added service data according to the location information.
  • the relationship between the corresponding correction data and the value-added service data is sent to the client application subsystem 13 through the data communication subsystem 12, so that the CORS has the ability to provide customers with value-added services such as navigation, weather, and geological conditions.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

La présente invention concerne un système de station de référence fonctionnant en continu, le système comprenant: un sous-système de station de référence (10). Le sous-système de station de référence (10) comprend une pluralité de stations de référence (101). La station de référence (101) comprend: un récepteur GNSS 220 canaux compatible avec les bandes B1 et B3 du système de navigation par satellite Beidou-2, le récepteur transmettant des données de positionnement par satellite reçues à un sous-système de centre de données (11). Le sous-système de centre de données (11) comprend: un dispositif de stockage de données (111) stockant des données de station de référence; un dispositif de traitement de données (112) obtenant, en fonction des données de station de référence, des données de correction des données de positionnement par satellite; et un dispositif de réseau (113) transmettant les données de positionnement par satellite au dispositif de traitement de données (112), et transmettant les données de correction à un sous-système de communication de données (12). Le sous-système de communication de données (12) comprend: un dispositif de communication mobile (121) transmettant les données de correction à un sous-système d'application client (13) par l'intermédiaire d'un réseau de données mobiles; et un dispositif de communication par Internet (122) transmettant les données de correction au sous-système d'application client (13) par l'intermédiaire d'Internet. Le sous-système d'application client (13) comprend une pluralité de dispositifs terminaux (131) affichant, en fonction des données de correction, un résultat de positionnement.
PCT/CN2017/107412 2017-03-09 2017-10-24 Système de station de référence fonctionnant en continu Ceased WO2018161605A1 (fr)

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CN206505179U (zh) * 2017-03-09 2017-09-19 泛太通信导航有限公司 连续运行参考站系统
CN108718300B (zh) * 2018-05-04 2021-07-02 湖南省测绘科技研究所 一种gnss数据在线加密传输系统和方法
CN109560855B (zh) * 2018-11-12 2021-06-04 广东星舆科技有限公司 一种cors定位服务质量的管控方法以及cors系统
CN111596330B (zh) * 2020-05-22 2022-11-11 深圳思凯微电子有限公司 定位方法、装置、终端和存储介质
CN111856529B (zh) * 2020-06-11 2023-04-11 广州南方卫星导航仪器有限公司 基于cors基准站的北斗高精度位置服务系统及应用方法
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CN112491461B (zh) * 2020-11-24 2023-03-24 重庆两江卫星移动通信有限公司 一种低轨卫星通信的cors网络数据传输系统及方法

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