On July 31, 2020, the Beidou-3 global satellite navigation system was officially completed and put into operation. This means that anywhere in the world, one can access the open, free, and high-quality navigation, positioning, and timing services of the Beidou system.From Beidou-1, Beidou-2 to Beidou-3, from regional to global, Beidou, as a major tool that is close to people's lives, is increasingly deeply rooted in people's hearts. Currently, more than half of the countries in the world are using the Beidou system.Interestingly, due to the advanced networking and application of GPS, people have been accustomed to referring to global satellite navigation systems as GPS for many years. The capabilities of Beidou are not inferior, and once its "global mode" is activated, it will provide the world with richer and more extensive application services.More than 70% of the smartphones connected to the internet in China provide Beidou services; The positioning accuracy of shared bicycles has been improved from 1 meter to 10 meters to 10 centimeters to 1 meter.Every morning, Ms. Zhao, a resident of Beijing, unlocks her Hello Bike downstairs in her residential area and rides 4 kilometers to her workplace. This mode of transportation has been going on for a year. Starting from the end of March this year, she felt that the driving experience was a bit different.In the past, when looking for a car, it was clearly displayed on the mobile app that there was an empty car outside the fence. When I ran over, I found that the car was actually inside the fence. I was in a hurry to go to work, so I decided not to ride it. Now, wherever I pointed, there is a car. "Ms. Zhao's change in feeling comes from the technological update of" Beidou high-precision navigation positioning+bicycles "- Beidou positioning devices are installed in the smart locks of each bicycle. Starting from the end of March, Hello Bike has gradually upgraded its intelligent lock firmware and integrated it into Beidou positioning in batches, increasing the positioning accuracy from 1 meter to 10 meters to 10 centimeters to 1 meter.In Hanzhong City, Shaanxi Province, drone pilots operate drones and use the Beidou satellite navigation system to collect video and image data of dangerous rocks and mountains at level I flood control points.

The smart lock on the bicycle can receive Beidou satellite signals, and the Hello Big Data Center receives hundreds of millions of vehicle positioning information from bicycles on the road every day. By matching and mapping the vehicle positioning information with the numerous electronic fences on the road at the sub meter level, it can guide users to easily find and return the car in a standardized manner, solving the problems of 'unable to find the car' and 'unable to return the car', "said Li Kaizhu, Executive President of Hello Mobility. This not only solves the industry pain point of" positioning drift ", but also helps solve the problem of disorderly parking of shared bicycles in urban governance.From industry applications to mass applications, Beidou services cover all aspects of life. At present, Beidou navigation and positioning services have been widely adopted by e-commerce, mobile intelligent terminal manufacturing, smart wearable devices, location services and other manufacturers, and have entered the fields of mass consumption and people's livelihood. More than 70% of the smartphones connected to the internet in China provide Beidou services. This reflects that Beidou has come to the side of more ordinary people.

Mobile phone users have no sense of whether they use GPS or Beidou signals for navigation and positioning. Taking mobile navigation as an example, the user opens the navigation software to input the destination, and the navigation software "sends" a request to the phone. The chip in the phone searches for satellite signals from the four major navigation systems of Beidou, GPS in the United States, Glonass in Russia, and Galileo in Europe, and performs optimization calculations before "returning" to the navigation software. That's why some experts point out that mutual compatibility is a major feature of global navigation, and some navigation software that claims to be dedicated to or named after Beidou is more of a gimmick.On the eve of the official launch of Beidou-3, the technical team of Huawei Honor Mobile conducted tests using the latest mobile phone, receiving signals from a total of 85 global navigation satellites, including 35 satellites from Beidou-2 and Beidou-3. Beidou is really powerful, "the engineers felt strongly.Strong signal, it also depends on specific practicality. In the past, when using a mobile taxi app to hail a taxi from the side of a building, it was easy to have inaccurate positioning or even navigate the car to the opposite building. Engineers have tested that with the increase in the number of Beidou satellites, the most intuitive experience is higher positioning accuracy and more accurate taxi positioning. The addition of Beidou-3 has greatly reduced the error of driving navigation on elevated bridges.This is consistent with the characteristics of the Beidou system - unlike other navigation systems that are mainly distributed on a single altitude orbit, the Beidou system uses a hybrid navigation constellation consisting of three types of orbit satellites, allowing users to simultaneously use medium and high orbit navigation satellite services. These satellites have high elevation angles and strong anti obstruction capabilities, providing users with continuous navigation services in environments such as multi-level overpasses, urban canyons, and tree cover.A large lightship with Beidou navigation mark telemetry and telecontrol device was put into the Dangan waterway at the mouth of the Pearl River. Photo by Xinhua News Agency reporter Tian JianchuanHuawei phones were early to "connect" to Beidou and have supported the Beidou-2 system since 2013. But compared to GPS, Beidou mainly played an auxiliary role at that time. After 2017, the number of Beidou satellite signals that mobile phones can receive has increased, and the system has become increasingly stable. At present, the latest Honor 30pro mobile phone supports the use of signals from the Beidou-3 satellite. Mobile phone engineers are not very familiar with the construction progress of the Beidou system, but only feel the changes in the Beidou system from the changes in signals. Since 2017, Beidou-3 has entered the stage of high-density launch and networking.The sequence of calling Beidou signals by mobile phone chip algorithms shows the improvement of Beidou's status. Huawei Honor's engineers explained that in the past, some foreign chips prioritized searching and using GPS signals, but Huawei currently adopts an equal or even superior usage strategy for GPS and Beidou.

    For mobile phone manufacturers, algorithms have no bias towards signals. Mobile phones attach great importance to user experience, so they will definitely choose the best signal. "This engineer said that the position of Beidou was won by themselves, and algorithms are also" voting with their feet.Perceive subtle changes in geological hazards and issue warnings in a timely manner; It is the "thousand mile eye" and "windward ear" in the mouths of sea fishermen.

    This year in my hometown Shimen County, Hunan Province, the Beidou monitoring system provided early warning and ensured the safety of people's lives and property, "said Ran Chengqi, director of the China Satellite Navigation System Management Office." Beidou has played a very good role in technology support for deformation monitoring, early warning, and personnel transferOne day at the end of June this year, a torrential rain poured in Panping Village, Nanbei Town, Shimen County. It will continue to rain these days, and the monitoring and warning system has just issued a warning that there is a risk of landslides in Leijia Mountain. "The town party secretary, Qin Hao, and the village branch secretary, Xu Bo, hurriedly rushed to the home of villager Chen Jinlan and advised them to move to the old village headquarters.At 14:11 on July 6th, the local area received the third orange warning issued by the Beidou satellite high-precision geological disaster monitoring and early warning system. Three hours later, a large-scale landslide occurred in Leijia Mountain, the largest in nearly 70 years, causing damage to some sections of the provincial road, destruction of a small power station, and collapse of five houses.Fortunately, all personnel were able to evacuate safely during this landslide, "said Qin Hao. With the help of the monitoring and warning system, all residents in the danger zone had already evacuated in advance before the landslide occurred.Qin Hao introduced that Beidou satellite sensors are distributed in risk and hidden danger points in areas prone to geological disasters, and data collection is carried out on subtle changes such as soil moisture content and cracks in hidden danger points. Then, the data will be transmitted to the high-precision geological disaster monitoring and early warning cloud platform and data collection station through the Beidou Geological Monitoring Station for intelligent geological disaster early warning assessment, so as to realize the monitoring and early warning of landslide, debris flow and other disasters caused by rainstorm. Even if there is a small displacement of the slope, the system can sense it and issue a warning in the first time.Mountain flood disasters are the main cause of casualties in flood disasters, and accurate prediction and forecasting can buy time for transfer. Therefore, "early warning" has become the top priority. At present, many places such as Jiangsu, Guizhou, Guangxi, and Sichuan have also established disaster monitoring systems based on Beidou, which can automatically monitor changes in hidden danger points in real-time 24 hours a day. The capability of Beidou enables disaster prevention and mitigation to be prepared in advance.The unique role of Beidou in emergency rescue and disaster relief lies in its "unique skill", which is the short message function, which is unparalleled among the four major satellite navigation systems in the world. Short messages are like the SMS function of navigation terminals. Currently, the short messages of Beidou-3 have been upgraded from 120 words to 1000 words, and the information they can convey is more diverse. For users who could only passively receive navigation and positioning information, actively reporting their precise location and disaster information can provide important information support for emergency rescue. In the 2008 Wenchuan earthquake rescue, in the case of ground communication paralysis, the emergency rescue team entering the disaster area used the short message function of Beidou to send out information in the first time, lighting up the signal of life.Especially in the limited means of communication at sea, this "skill" is highly welcomed by the marine fisheries department and the vast number of fishermen.In early August of this year, as Typhoon Hagibis approached step by step, strong winds blew over the sea in Liuzhou Bay, Sansha Town, Xiapu County, Fujian Province. Nearly a hundred fishing boats are anchored neatly in the bay, and more than 500 fishing boats have already returned to the harbor or taken shelter nearby.At present, there are 4467 fishing boats in port and 1290 transferred fishing boats. There are no operating boats in the sea affected by the typhoon. "In the duty room of the Fujian Provincial Fisheries Disaster Reduction Center, staff are using the Beidou Fishing Vessel Dynamic Monitoring Management System to monitor the real-time movements of ships that may pass through the sea area due to the typhoon, and promptly notify and remind offshore fishing boats to return to port for shelter. On the computer screen, there are densely packed triangular symbols representing fishing boats. Clicking on the symbol will display detailed information such as the specific location, size, model, owner's name, and phone number of the fishing boat.In Fujian, where typhoons frequently hit, more than 10000 fishing boats have installed Beidou position sensors, which have achieved automatic identification, positioning, and alarm functions for ships. 24-hour uninterrupted monitoring of ship movements, precise positioning... The sea conditions of fishing boats are all within the "line of sight" of the Beidou system.Just before the landing of "Heigebi", a fishing boat in the Minzhong fishing grounds of Fujian suddenly lost power, and the situation was very critical. After receiving the alarm information, the Fujian Provincial Oceanic and Fisheries Bureau quickly obtained the location of the seeking fishing boat and the information of surrounding fishing boats through the ship mounted Beidou position indicator. They organized nearby fishing boats for rescue in the first time, and the four people on board were finally successfully rescued.The Beidou navigation terminal has become a standard configuration for fishing boats in the Bohai Sea, Yellow Sea, East China Sea, South China Sea and other sea areas in China, with real-time monitoring of offshore operations, the ability to report emergencies at any time, and the ability to listen to weather forecasts and warning notifications at sea. Beidou has become the "thousand mile eye" and "windward ear" in the mouths of fishermen. According to statistics, more than 70000 fishing boats and law enforcement vessels across the country have installed Beidou terminals, providing assistance to over 10000 people.Precision agriculture has become a loyal user of Beidou applications; After the truck is connected to Beidou data, the actual location, operating route, cargo volume, fuel consumption, mileage and other data are all clear at a glance.Hello, welcome to the Beidou Navigation System! "At 5 o'clock in the morning, Ni Xintao, a farmer from Chuangyou Agricultural Machinery Cooperative, sat in the cab of the combine harvester in Xinghua Grain Industry Park, Jiangsu. The first thing he did was to open the button on a small box on the center console. A sweet female voice immediately sounded, and the harvester automatically ignited, starting to walk and work. Ni Xintao habitually placed her hands on the steering wheel without any operation.After more than a decade as an agricultural machinery operator, Ni Xintao feels that this wheat harvest season is the easiest. After a trip, the harvester walked to the ground without him having to handle complex operations such as turning and turning. After three to five efforts, the harvester turned its head and continued to run in a straight line through the wheat fields, while the person sat in the cab and watched. This small box is really amazing. It's easy to do farm work. Moreover, it's precise in sowing and saves on the amount of seeds used, "Ni Xintao exclaimed repeatedly.The small box is actually the "smart brain" of the "Smart Maizuo Technology Supported by Beidou Navigation" developed by Nanjing Agricultural University. In the second half of 2019, Tian Yongchao, Vice Dean of the Smart Agriculture Research Institute at Nanjing Agricultural University, led a team to install this small box on every agricultural machine in the cooperative.Beidou Navigation meets the needs of precise operation of agricultural machinery and equipment, as well as precise implementation of agricultural prescriptions, "said Tian Yongchao. Agricultural researchers have accumulated a lot of research experience in the technology system of smart wheat cultivation, and have issued different agricultural prescriptions based on regional climate conditions, soil fertility, variety characteristics, plant growth, etc. Previously, the promotion of these technologies and prescriptions, as well as precise sowing and fertilization operations, required technicians to teach agricultural machinery operators how to set parameters step by step. By combining Beidou Navigation with the Smart Wheat System, an embedded system can be developed to automatically receive system instructions and obtain spatial location information. Then, the operation route can be planned, and various operation instructions such as sowing, fertilizing, irrigation, and harvesting can be directly issued to the agricultural machinery. The agricultural machinery can run on its own.In Aksu City, Xinjiang, with the help of the Beidou system, crop protection drones hovering over cotton fields accurately and orderly spray pesticides, saving time and effort while also saving costs; In Zhanjiang, Guangdong, the Beidou unmanned rice transplanter automatically operated, and the 550 mu paddy field planting operation that normally requires at least three people to complete in 15 to 20 days was completed in less than 10 days... At present, the domestic Beidou agricultural machinery auto drive system has deployed more than 20000 sets, which can save 50% of labor costs; The Beidou based agricultural machinery operation supervision platform provides remote management and precise operation services for over 100000 agricultural machinery, effectively increasing production by 5% and saving agricultural machinery fuel consumption by 10%. The "skills" of Beidou are deeply integrated into agricultural production, and precision agriculture has become a "loyal user" of Beidou applications.The application of the Beidou system in industries such as transportation, agriculture, forestry, fisheries, hydrological monitoring, meteorological forecasting, communication timing, power dispatching, and public safety has been flourishing, generating significant economic and social benefits.Transportation is a typical industry for the application of Beidou. The GPS system completed the launch and networking of 24 satellites in 1995, forming a global service capability. Its application was earlier and more mature. As a latecomer in the field of satellite navigation, the construction of the Beidou system faced significant challenges in terms of how to use it first. As one of the earliest demonstration application industries of Beidou, the transportation sector has made great contributions and benefited immensely.Liao Xining, the general manager of Hunan Hongsheng Logistics Co., Ltd., is most concerned about how to prevent speeding and fatigue driving during urban distribution and dangerous goods transportation, and improve safety management level. He deeply felt the changes brought by Beidou to the freight industry.Last year, there was a rear end collision accident on the Hengyang section of the Beijing Hong Kong Macau Expressway, and the driver involved fled. The traffic management department tracked our company's vehicle through the Beidou vehicle terminal, which happened to pass through the accident section at the time. Then, using the camera installed on our truck, they quickly locked onto the vehicle involved. The Beidou vehicle terminal mentioned by Liao Xining is a typical digital application in the field of transportation and logistics.The speed limit for dangerous goods transport vehicles is 80 kilometers per hour. When the speed is about to reach this value, the Beidou terminal will automatically issue a reminder. If the vehicle continues to drive for more than 3 and a half hours, it will also prompt the driver to rest. Liao Xining said that through the Beidou system for active management, the incidence of speeding and fatigue driving has been greatly reduced.In the opinion of Peng Kequn, Chairman of Hunan Yiai Satellite Monitoring Technology Co., Ltd., the Beidou system provides real, real-time, and effective "cargo trajectory flow", which is of great help in strengthening the comprehensive application of freight data. A high vacancy rate indicates that there are not enough orders, the carrying capacity exceeds a certain value, and the cost of vehicle maintenance is higher than other vehicles, "said Peng Kequn. After connecting to Beidou data, the actual location, operating route, cargo volume, fuel consumption, mileage and other data are all clear at a glance, which helps to achieve efficient" vehicle cargo matching ".Compared to previous navigation systems, the accuracy of Beidou positioning signals has significantly improved, trajectory drawing is more precise, positioning speed is faster than before, and anti-interference ability is also better, "said Peng Kequn. With the development of Beidou applications towards intelligence, it is expected to achieve new functions such as automatic route optimization and unmanned driving in the future, making logistics "smart".As of the end of 2019, more than 6.5 million operating vehicles, 40000 postal and express delivery vehicles, approximately 80000 buses in 36 cities, over 3200 inland navigation facilities, and over 2900 maritime navigation facilities in China have applied the Beidou system.Beidou high-precision technology, like water, electricity, and gas, continuously flows into various industries and enters the lives of ordinary people.The phrase 'good in the sky, good on the ground' comes from Sun Jiadong, the first chief designer of the Beidou satellite navigation system, highlighting the practical purpose of Beidou.The Beidou system is a giant space system built by the country, which unleashes its capabilities. The specific usage is implemented by third-party software or hardware. As a concentrated manifestation of Beidou's capabilities, "Beidou High Precision" is becoming a public service that is accessible, on-demand, and accessible to the public. Like water, electricity, and gas, it is constantly flowing into various industries and entering the lives of ordinary people.In order to better utilize Beidou, while constructing the Beidou constellation in space, a national Beidou ground-based augmentation system was also built on the ground, which is equivalent to the ground version of the Beidou system. Its function is to receive Beidou satellite signals through over 2000 Beidou ground-based augmentation stations scattered throughout China, calculate satellite positioning errors in real time, and provide users with higher precision positioning services.Experts introduce that Beidou high-precision smartphones can be used for driving positioning and navigation of automobiles, lane level navigation can be used for large truck management, precision agriculture, intelligent driving of automobiles, etc., and higher precision millimeter level applications can be used for monitoring building deformation and detecting geological disasters such as mudslides and landslides.——In Beijing, using Beidou precise positioning technology, buried pipelines, image maps, and aerial photographs can be overlaid together to clearly display the relationship between these gas pipelines and ground buildings below the city, assisting in the safe operation of gas pipeline networks through big data calculations;——At Yangshan Deepwater Port in Shanghai, based on centimeter level positioning data, visual laser perception system, and high-precision maps, intelligent driving heavy trucks can stop at the most convenient location for container lifting within 15 seconds with an error of ± 3 centimeters;——The Beidou system also played an important role in the prevention and control of the COVID-19. Beidou high-precision measurement equipment provides frontline support for the construction of Huoshenshan and Leishenshan hospitals in Wuhan, improving the efficiency of site laying and measurement; Beidou drones and unmanned delivery vehicles are used to distribute medical supplies in epidemic areas, reducing direct contact between people; Based on Beidou, the public supervision and service platform for road freight vehicles continuously pushes epidemic information, epidemic prevention material transportation information, and road transportation service information to over 6.5 million key transportation vehicles connected to the network, ensuring smooth transportation of epidemic prevention and rescue materials.With the combination of Beidou's high-precision and new technologies such as artificial intelligence, big data, cloud computing and 5G communication, Beidou's applications have extended from satellite navigation and positioning to industrial Internet, Internet of Things, Internet of Vehicles and other emerging applications. Beidou is no longer just a satellite navigation system, but also a comprehensive spatiotemporal service system that is ubiquitous, integrated, and intelligent.Taking China's independently developed Beidou acceleration assisted positioning as an example, the number of service users has exceeded 500 million. The main function of Beidou Accelerated Positioning Service is to shorten the initial positioning time of terminal hardware from more than 30 seconds to 3 seconds, helping terminal users obtain a smoother positioning experience. At present, multiple domestic and foreign chip manufacturers have integrated this service into their mobile phone chips, enhancing the positioning experience for global users.Ran Chengqi stated that the completion and opening of the Beidou-3 global satellite navigation system does not mean the end of the system construction, but rather the starting point for serving the world.Journalist's SpeechBeidou will bring more surprisesThe Beidou is right beside you, anywhere on Earth. "Since the end of 2018, it has been providing basic global services, and with the further expansion of the Beidou-3 system to the world, this statement has become a reality." China's Beidou "has truly become" the world's Beidou ".From transportation, public safety, agriculture, forestry, and fisheries, to drone cruising, gas leak and heat pipeline detection, positioning of drainage facilities such as urban rainwater wells, and even ear tags with built-in Beidou navigation chips for grazing cattle and sheep... The application of Beidou is "limited only by imagination".Beidou is for practical use, and making good use of Beidou will better promote its continuous upgrading and provide more stable, reliable, and high-quality services. Last year, the total output value of China's satellite navigation and location services industry reached 345 billion yuan, of which the Beidou system contributed significantly, fully demonstrating the significant economic and social benefits generated by Beidou applications. In the 5G era, the development of the Beidou system will usher in more opportunities and become an important force in building a smart home through technology.The trend of technological innovation is always surging, and there is still great room for improvement in the service capabilities and scenarios of the Beidou system. Continuously expanding imagination and always striving towards dreams, Beidou will bring more surprises to people.

Source: People's Daily

The Beidou is right beside you, anywhere on Earth. "Since the end of 2018, it has been providing basic global services, and with the further expansion of the Beidou-3 system to the world, this statement has become a reality." China's Beidou "has truly become" the world's Beidou ". From transportation, public safety, agriculture, forestry, and fisheries, to drone cruising, gas leak and heat pipeline detection, positioning of drainage facilities such as urban rainwater wells, and even ear tags with built-in Beidou navigation chips for grazing cattle and sheep... The application of Beidou is "limited only by imagination". Beidou is for practical use, and making good use of Beidou will better promote its continuous upgrading and provide more stable, reliable, and high-quality services. Last year, the total output value of China's satellite navigation and location services industry reached 345 billion yuan, of which the Beidou system contributed significantly, fully demonstrating the significant economic and social benefits generated by Beidou applications. In the 5G era, the development of the Beidou system will usher in more opportunities and become an important force in building a smart home through technology. The trend of technological innovation is always surging, and there is still great room for improvement in the service capabilities and scenarios of the Beidou system. Continuously expanding imagination and always striving towards dreams, Beidou will bring more surprises to people.