GNSS Training Program:  2022 BeiDou Navigation Satellite System Development and High- Accuracy Applications LU Xiaochun Jan. 11, 2022 1 CONTENTS System Status Application Promotion International Cooperation 2
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On July 31, 2020, General Secretary XI Jinping of the CPC Central Committee announced to the world that BDS-3 was formally commissioned and provided seamless coverage passive navigation, positioning, and timing services for the global users. BDS becomes a proud Chinese innovation for the world.
BDS is mainly comprised of three segments: a space segment, a ground segment and a user segment. Up to now, BDS-3 constellation consists of 3 GEO satellites, 3 IGSO satellites, and 24 MEO satellites. The BDS ground segment consists of various ground stations, including master control stations, time synchronization/uplink stations, monitoring stations, etc. The BDS user segment consists of various kinds of the BDS terminals.
BDS Service Performance Indicator
BDS Availability  (5° Elevation Mask, PDOP≤6) 7
01. Space Signal Quality Figure 1  Minimum Ground Received Power of Signal Components 02.  Space Signal Precision Figure 2  URE of the BDS Satellites
03.  BDS Coordinate Reference Frame Figure 3 BDS Monitoring Stations and Globally Deployed IGS Monitoring Stations CHPI MAW1KOUR STHL KOKVMADR CEBR EBRE AREQ REDU BRUX KIRU NAURWROCDAEJ CHUM CKIS SYDNDARW KAT1 FAA1 PERT 2010 Figure 4  Difference between BDCS and ITRF 2014
●  Satellites:  14 MEO Satellites ●  Method:  Global Random Access ●  Maximum length of a single message: 560 bits (40 Chinese characters per message)
▷ 1. System Status
●   Satellites:  6 MEO&SAR Payloads ● Standard: COSPAS-SARSAT ●   Characteristics:  Return Link Service
Satellites:  3 GEO Satellites Coverage Area:  China and surrounding areas Maximum length of a single message : 14,000 bits (around 1,000 Chinese characters)
●  Satellites:  3 GEO Satellites ●  Coverage Area:  China and surrounding areas ●  Accuracy:  decimeter (dynamic), centimeter (static)
Satellites:  3 GEO Satellites Standard:  ICAO Coverage Area:  China and surrounding areas Services Mode:  Single-Frequency or Dual Frequency Multi-Constellation
O Service is provided through mobile communication networks or the Internet, with positioning accuracy at meter, decimeter, centimeter and millimeter levels
● The latest released documents of Open Service Performance Standard, Signal In Space Interface Control Document are shown as followings. ●   More information is available at: en.beidou.gov.cn
BeiDou Navigation Satellite System Open Service Performance Standard (Version 3.0) China Satellite Navigation Office May, 2021
Application Promotion
Establishment of full industrial chain and breakthroughs in basic products innovation Making breakthroughs in the key technologies of basic products Performances and techniques greatly improved, and large-scale applications enter into market Sales volume domestic BDS-supported chips and modules has exceeded 100 million
Entry into Mass Market, Sharing Economy and People's  Livelihood 79% smart phones sold in China in the Q1 and Q2 of 2021 supported BDS positioning function Meter-level positioning is available based on BDS ground-based augmentation service signal Smart phone supporting BDS short message service and information interconnection to be  launched
Industrial and regional applications of BDS have been significantly improved Focus on BDS/GNSS Large-scale Applications Widely used in Transportation, Public Security, Disaster Relief and Mitigation, Fishery, Agriculture, Forestry, Smart City, and Precise Digital Construction Quick Fusion with Power, Finance, and Communication Industries
BDS Smart Medicine and fighting against COVID-19 Travel record monitoring Epidemic prevention Tele medicine Rapid hospital building Personal health management Material distribution Precise disinfection through UAV Real time data and decision support have been provided
BDS improves infrastructure construction Intelligent operation and maintenance of BDS charging pile Smart operation and maintenance and centralized meter reading based on IoT BDS Intelligent tourism information service system The big data service platform of scenic spots Charging Piles of State Grid EV Service--Construction Site Improving urban power infrastructure and making tourism more smart, informationalized, and modernized
Based on BDS, a tourism information system with multimedia, multi-form, multi-service and multi- terminal support should be established. In order to realize the standardization, fine management, and personalized service of tourism industry, the brand value of local featured products should be improved, and the marketing model should be innovated with the help of tourism information.
BDS Intelligent Tourism Information Service System can provide remote information services for all levels of tourism agencies, scenic spots, tourism service centers, and tourists.
The big data service platform of scenic spots can collect data through multiple channels such as video data, mobile phone signal data, BDS location data and infrared acquisition data, which is convenient for the scenic spots to make accurate decisions, safety monitoring management and emergency treatment for their construction. The tourism quality management and law enforcement platform uses BDS positioning, voice, video intercommunication, and data upload to manage scenic patrol law enforcement personnel. When abnormalities occur, patrol and law enforcement personnel can quickly report incidents and talk in real time. The standardized service platform for travel agencies provides travel agencies with noise-free explanation terminals for teams and dynamic route management services.。 25
Difficulties in Construction High Cost of Hardware Low Real-time Accuracy Invalid Monitoring Work Uni-processing→Cloud Computing ● Hysteretic Observation→Real-time Monitoring ● ● Decimeter→Centimeter ● Outdoor manual work→Automatic collection Lower cost, Higher Precision, Lighter Construction oued uno
Simple Terminal, Low Power Consumption, High Integration, Cloud Services
BDS High Precision Deformation Monitoring BDS safeguards the security of the dam across the world’s highest quake lake Sarez Lake: Located in the Pamir region of 3263 meters above sea level in eastern Tajikistan. It is a natural lake formed by the collapse of the mountain after a strong earthquake occurred in the area on February 18, 1911. Sarez Lake and Usoi Dam An earthquake may damage the dam. The whole area of Tajikistan is in a seismically active zone, and now it has entered a dangerous period of another earthquake. If the dam collapses after an earthquake, the lake water will engulf parts of Tajikistan, affecting millions of people in Tajikisatan, and even people in Afghanistan and Uzbekistan . The ecological environment in Central Asia will be destroyed, and the loss of life and property will be immeasurable.
BDS High Precision Deformation Monitoring BDS safeguards the security of the dam across the world’s highest quake lake The dam deformation real-time monitoring system customized for the special harsh environment of the Sarez Lake Dam in Tajikistan has the functions of real-time collection, transmission, calculation, and analysis of BDS data, thus realizing the stability monitoring of dam reference station and deformation monitoring service for body monitoring points in the dam area. BDS integrated monitoring terminal  Solar photovoltaic power supply system VSAT satellite communication system Real-time data solution system
BDS High Precision Deformation Monitoring BDS safeguards the security of the dam across the world’s highest quake lake Operation of High Precision Deformation Monitoring System
BDS High Precision Deformation Monitoring BDS high precision monitoring equipment is sensitive to any slight change on slope Due to agricultural irrigation and other reasons, landslide disasters frequently occur in Heifangtai, Gansu Province. In October 2018, BeiDou high precision monitoring equipment was installed at the hidden geological hazard points in Heifangtai, which can capture millimeter-level landslide displacement changes in real time. Location Map of the Successful Warning in Heifangtai Adaptive frequency conversion landslide crack monitor Red lines represent the adaptive frequency conversion data collection process, green lines represent the regular low frequency data collection process.
BDS high precision monitoring equipment is sensitive to any slight change on slope The technology team of the project has successfully warned landslide for many times, avoiding casualties and property losses, and has received extensive media reports and drawn great attention from many sectors of society. 2019-10-05 2019-03-26
BDS high precision monitoring equipment is sensitive to any slight change on slope 2021-01-27 Successful early warning of landslide disasters
High-precision positioning of intelligent agricultural machinery in black soil area Research on high-level augmented information generation algorithms for wide-area areas to form a comprehensive information fusion processing system
Broadcasting system
To build a space-based augmentation information broadcasting system for To realize high-precision positioning is an effective measure in agricultural applications such as intelligent agricultural machinery, precision seeding, variable fertilization, etc. Black Soil Application Promotion Areas
High-precision positioning of intelligent agricultural machinery in black soil area Wide area Augmentation+ Regional Augmentation Space- and Ground-based Integrated broadcast Unlimited number of users High precision positioning for agricultural machinery
High-precision positioning of intelligent agricultural machinery in black soil area Multiple operation modes Straight line, circle, curve and diagonal operation without human intervention in the whole process
-Smart Transportation With the development of urbanization, the pressure of urban traffic management is increasingly heavy, and traffic jam and congestion are becoming more and more prominent. It is particularly important for BDS to help intelligent implementation of urban transportation. Waiting with anxiety With the accelerating pace of life, public transport has become the preferred means of transportation for green travel, but waiting for cars has created anxiety. The number of shared bikes has soared, and parking in mess and disorder has not stopped, seriously affecting normal traffic and the appearance of the city. There are blind spots in school bus management. Chaos such as school bus not driving according to the specified route, overcrowding, and supervisor managing children to get on and off by "yelling" occurs from time to time. Container Supervision It is difficult to supervise the container. Capturing the location of the container is not available in real time, and the goods cannot be tracked in the whole process. Regulatory problems such as scheduling problems and information delay need to be solved urgently.
The Vehicle networking platform based on BDS is a real-time, accurate, and efficient vehicle management and control platform. It is an integrated network platform that realizes intelligent traffic management, intelligent dynamic information services, and intelligent vehicle control.
High-precision and Rapid Measurement of Hospital Construction in Burkina Faso GNSS Based Technology in the Civil Construction in Saudi Arabia Application of Harbors Reconstruction in Lebanon With the high-precision positioning technology provided by BDS/GNSS ground-based augmentation system ( also known as Continuously Operating Reference Stations, CORS) and in combination of communication technology, the requirements of different users on the positioning accuracy, real-time and anti-jamming performance across different applications can be satisfied, such as city planning, land surveying and mapping, cadastral management, urban and rural construction, environmental monitoring, disaster prevention, traffic monitoring, mine surveying and others.
networked radar, deep space exploration Smart transportation system: Intelligent signal light management and control 1s Intelligent road monitoring 1s Rapid deployment of emergency roads 1s Sky-eye tracking camera 1s Sky-eye data transmission 1s
Platform deposit certificate business Illegal broadcast video forensics Application of product traceability Time synchronization systems Smart transportation control system Meeting the needs for different accuracies in different standard time application scenarios 2. Industrial Application -More Diversified Application Modes
BDS+5G→More Mature Fusion of Communication & Navigation
BDS-based products have been exported to and used in more than half countries and regions in the world. BDS has been widely used in ASEAN, Southern Asia, Eastern Europe, Western Asia, Africa in land ownership confirmation, precision agriculture, intelligent port management, etc., promoting local economic and social development.
International Cooperation
3.1 Compatibility and Openness to Provide Better Service (Bilateral Cooperation) The 26th China-Russia Prime Minister Regular Meeting Российско-Китайская дорожная карта сотрудничества в области спутниковой навигации на 2021–2025 годы Сосударственндя корпорания по космической деятельности «Роскосмос» Комиссия по китайской спутниковой навигационной системе 2021 roz BeiDou - GLONASS Compatibility and Interoperability - 2021-2025 Cooperation Roadmap Cooperation in joint test, station construction, and precision agriculture under the China-Russia Satellite Navigation Key Strategic Cooperation Project Committee framework China and U.S. fostered the cooperation in compatibility and interoperability, SBAS, and civil use industries
3.1 Compatibility and Openness to Provide Better Service (Bilateral Cooperation) CSNO and CONAE has built a kind of normal cooperation mechanism in satellite and navigation, and will carry out cooperation in joint applications, test and assessment, education and training, etc., to accelerate economic and social development in Argentina. Workshop on BDS/GNSS Applications in China and South In order to promote national construction and social and economic development for both countries and enhance cooperation and communication in the satellite navigation field, CSNO and SANSA signed the MOU at the workshop on BDS/GNSS Applications in China and South Africa.
3.2 Joint Discussion, Construction and Sharing with The Belt and Road countries 3rd China-Arab States BDS Cooperation Forum Dec. 8, 2021 2nd China- Central Asia BDS Cooperation Forum Oct. 13, 2021 1st China- Africa BDS Cooperation Forum Nov. 5, 2021 EXPO 2020 Dubai BeiDou Showcase Oct. 2, 2021
3.3  Chinese Wisdom and Contribution through Multi-lateral Exchanges Communicated with other GNSS providers technically, and issued updates on BDS in multilateral academic platforms such as Multila Satellite Navigation Summit, Scientific and Technical Subcommittee, UNOOSA, China Satellite Navigation Conference, etc.
3.4  Active participation in ICG Programs and Activities
3.5 Ratification by International Standards International Electrotechnical Commission China’s BDS World’s BDS First-class BDS T H A N K    Y O U By: LU Xiaochun E-mail: luxc@ntsc.ac.cn