Following Huawei's announcement that the Mate50 series supports BeiDou satellites and Apple's announcement that the iPhone14 series supports satellite communication function news, a few days ago, the satellite navigation system once again became the focus of attention.
Recently, Baidu Maps released the latest progress of the application of Beidou satellite navigation system, the daily positioning volume of Beidou satellite exceeded 100 billion times for the first time. At the same time, Baidu Maps announced that it has officially switched to prioritize the use of the Beidou system for positioning, and that the "Baidu Maps Intelligent Positioning Open Service" has been upgraded and renamed the "Baidu Maps Beidou Positioning Open Platform".
01BeiDou system empowers map navigation upgrade
Since the beginning of the Beidou satellite navigation system, Baidu Maps has launched map navigation and positioning services based on the Beidou system, and the degree of its application has been deepening. This time, under the deep empowerment of Beidou system, Baidu Maps has upgraded and realized a number of functions such as lane-level navigation and parking space-level navigation.
For highway and expressway scenarios, Baidu Maps' lane-level navigation is the first of its kind in the country to go online with the "Lane-level Accident Alert" function, which can update users with real-time information about the accident lanes in front of them and dynamically guide users to avoid dangerous lanes in advance, creating a safer and more comfortable driving experience.
In response to the "parking difficulties" and other problems in the parking lot scene, Baidu Maps has once again expanded the landing scene of parking level navigation, helping Yunnan Pu'er and other places to realize the freedom of parking, as well as providing services for the "Asia's largest parking lot," Beijing Aloha Mall, and "Asia's largest integrated railroad passenger hub," Beijing Fengtai Station.
In addition to map navigation, Baidu Maps Beidou Positioning Open Platform has cumulatively served more than 2.55 million developers in thousands of industries such as automotive, travel, finance, logistics, tourism, Internet of Things, Internet, and life services. With the technical capabilities of the Beidou system, the data security and reliability of Baidu Maps has been further improved.
Along with the opening of the BeiDou 3 global satellite navigation system, China's space and ground infrastructure has a more complete service capability, and BeiDou applications and industrialization are gradually deepening. The Baidu map to adjust the priority of the Beidou system is not only a new progress of Beidou in map navigation, but also another important achievement of Beidou application to serve the public.
02 Compared with GPS, what are the advantages of Beidou?
We all clearly understand that globally, there are major satellite navigation systems such as the U.S. GPS, China's BeiDou, Russia's GLONASS, and the European Union's Galileo (GALILEO). Among them, the U.S. GPS global positioning system has also been dominating the international satellite navigation system.
However, after the successful completion of the Beidou Global Satellite Navigation System, which took 26 years to complete, China's 3rd generation Beidou Navigation Satellite System has also begun to provide services to the world. And with the progress of the times, scientific research power enhancement, BeiDou and GPS positioning system has the ability to match each other, but also to break the Asian market GPS "dominant" status of the deadlock, and GPS is the formation of the development of the situation of equal rivalry.
Although compared with GPS, BeiDou built development time is late, but BeiDou as a latecomer, has the advantages of the latecomer. This is just like the update of cell phone software, even if it is a small detail change, the new version will always be more trendy and accurate than the old version, and also better able to meet the new requirements of the public. So, where does Beidou's latecomer advantage specifically manifest itself?
First of all, BeiDou is the first satellite system in the world that uses tri-frequency signals for positioning, and its positioning accuracy is higher than that of GPS that uses dual-frequency signals. The tri-frequency signal of BeiDou lies in the fact that through the measurement of signal combination of multiple frequency bands, various errors can be eliminated or weakened, eliminating the influence of not paying attention to the parameters and so on on the data processing.
Secondly, BeiDou navigation system provides two positioning systems: passive positioning and active positioning. Passive positioning, that is, the positioning system of the current GPS system, operates in a way that the satellite broadcasts positioning signals, and the user end is responsible for receiving and processing them; whereas active positioning allows the user end to send positioning requests, and the satellite receives the signals and feeds back the positioning information, that is, it is a two-way communication with the satellite.
Moreover, based on active positioning system, BeiDou provides short message communication service, which has both positioning and communication functions, while GPS can only locate. Short message communication is one of the most characteristic services of BeiDou system, and the maximum length of a single communication reaches 1,000 Chinese characters, which can be communicated anytime and anywhere as long as there is a satellite signal, regardless of the limitations of the surrounding infrastructure.
However, we may not experience the benefits of BeiDou's short message communication function in general, but it has great advantages for harsh environments such as in the absence of mobile communication signals. For example, when operating at sea, fishermen have switched to BeiDou satellite positioning, which is conducive to calling for help from each other in case of danger. Another example is in the mountains and forests, Beidou can guard the migratory routes of wild animals, such as in the Yunnan "lost elephant herd" storm in 2021, Beidou system came into play, silently guarding the elephant herd.
In addition, Beidou's short message communication function also plays a particularly important role in disaster relief. 2008 Wenchuan earthquake, the disaster area communication is interrupted, all rely on this function of the Beidou system to contact with the outside world, monitoring the location of the disaster, for the command to make decisions and timely rescue.
虽然北斗有着GPS某些方面不可比拟的优势，但从日常应用上来看，人们可能对GPS的应用更为熟知。不过，随着北斗卫星定位系统被应用于华为、苹果手机以及百度地图导航，从某种程度上来说，北斗替代GPS将指日可待。
03What can BeiDou satellite navigation system do?
In recent years, with the development of BeiDou system construction and service capacity, its products have also gradually penetrated into various fields such as transportation, marine fishery, hydrological monitoring, meteorological forecasting, mapping and geographic information, forest fire prevention, communication time-statistics, electric power scheduling, disaster relief and mitigation, emergency search and rescue, etc., which has injected new vitality into the development of production and life of human society, and has played a significant role in China's economy and society as well as national defense and security.
According to China Satellite Navigation and Positioning Association released the "2022 China Satellite Navigation and Location Services Industry Development White Paper" data show that in 2021 China's satellite navigation and location services industry continued to maintain a stable and high-speed growth trend. Among them, the overall output value of China's satellite navigation and location services industry reached RMB 469 billion in 2021, an increase of 16.29% from 2020.
Indeed, along with the development of the Internet of Things, 5G information technology, big data and cloud computing and other technologies, Beidou satellite navigation has developed into a representative of China's high-tech strategic emerging industries, especially the deepening development of "Beidou +" and "+ Beidou", which is further promoting the expansion of the application market. In particular, the deepening development of "BeiDou+" and "+BeiDou" has further promoted the expansion of the application market.
Transportation field. With the rapid development of BeiDou positioning technology, BeiDou applications are more widely carried out in the fields of highway infrastructure safety monitoring, urban transportation and travel services, port high-precision location services, etc., and have boosted the prosperous development of new modes and new forms such as unmanned vehicles, unmanned aircraft distribution, intelligent parking and intelligent networked vehicles.
Intelligent agriculture field. With the further advancement of digital transformation, the precise positioning capability of Beidou has created a new situation for the application in the field of agriculture, helping the development of intelligent agriculture into the fast lane. With the application of Beidou system, it can greatly save labor and improve production efficiency when sowing farmland; wear positioning system for cattle and sheep when grazing to realize easy grazing; and be safer and more convenient when operating at sea.
Disaster prevention and relief. Combined with the navigation and positioning, timing service, short message communication and other functions of BeiDou satellite system, BeiDou system can be applied to the field of disaster prevention and relief, covering disaster early warning, disaster relief command, disaster communication, monitoring of real-time disaster situation and so on, which can effectively reduce the impact of disasters to a certain extent.
In addition, the Beidou system application market also involves other fields such as national defense and security, military and police, emergency rescue, and digital application scenarios of wisdom + mass life.
With the vigorous development of digital economy, we can foresee that the application of BeiDou satellite system will be more extensive in the future, and its market scale will be bigger and bigger, and it will realize better socio-economic benefits with stronger innovation ability and more sufficient development power, and step by step it will "conquer" the city occupied by GPS!
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