Fishermen often speak, now out to put the two things, first put the matsu, the second put the big dipper, to worship, they worshiped, two visible beidou how important to them. "

"Beidou satellite navigation system in China" white paper released on June 16. Conference, China's satellite navigation system management office director, spokesman RanCheng the beidou system is introduced: the beidou system (BDS) availability index has reached 99.996%. The overall plan target is around 2018 18 about satellite launch, for "neighbourhood" all the way along the countries to provide basic services, 2020 years or so to complete the construction of the global system.

According to the content, the white paper, BDS since 2012 is applied to the Chinese mainland and the surrounding part of the asia-pacific region, it started later than the us GPS not only more than 20 years, has significantly lagged behind the Russian glonass system. China promote the independent development of satellite navigation system, because its location and tracking information as well as military and security demand there is a direct correlation.

Although started late, but the Chinese self assessment thought in the past four years has made remarkable achievements. Beidou system spokesman RanCheng held a press conference on June 16, said "parts performance is slightly better than the index requirements. Such as in Beijing, zhengzhou, xi 'an, urumqi and other regions, positioning accuracy can be up to 7 meters; in low latitudes, such as the asean countries, positioning accuracy can be up to 5 meters", "high-precision, strengthen the system on a trial basis this year are built, precision will receive a qualitative leap, to 10 cm below". He also said "BDS chip has 40 nm process line, in the international leading level; independent chip price has super international similar products, the cheapest chip within 10 yuan".

Beidou have much cattle?

First, to get to know the big dipper.

Beidou satellite navigation system (BDS) (hereinafter referred to as the beidou system) is China's independent construction, independent operation of the satellite navigation system, for the global users with all-weather, all-day, high-precision positioning, navigation and timing services of national important space infrastructure.

At present, the suppliers of the UN commission on satellite navigation recognized all over the world only the us GPS, Russian glonass, China's beidou, the four European Galileo, which realize the formal operation of only three countries China and Russia.

Beidou has walked in the front of the European Galileo. Compared with GPS and beidou orbit height more than 1.8 times the GPS, so its signal blind Angle is smaller than the GPS receiver, communication coverage, higher precision is also higher, beidou global networking finished in 2020, its location accuracy will be achieved astonishing level meters, become the world's highest precision of navigation satellite system, this GPS also can match today. "If use the high precision application service about car, we don't need to rely on telephone to call the last one hundred meters, the last ten meters, this car can go directly to the soles of your feet." RanCheng said.

"Beidou system to provide the regional service since 2012, the system runs steadily, fully meet the requirements of indicators, the positioning accuracy is better than that of 10 meters." RanCheng said, from the point positioning accuracy, in key areas, such as Beijing, urumqi, xian beidou positioning accuracy is better than 5 meters, in low latitudes, such as Thai regions such as the accuracy is better than 5 meters.

"Beidou system has a unique technology system." RanCheng said, such as the international initiative by the geostationary orbit, tilt geosynchronous orbit, three satellites in orbit round earth orbit in building a hybrid constellation; International initiative navigation and positioning, short message communication, difference enhance fusion technology system; Provide multiple frequency point navigation signal and the characteristics of short message communication service.

Big dipper will change our lives?

Beidou not tall, also very grounding gas, it is also a good helper of our life.

In car on the Internet, for example, which can solve the vehicle safety situation report, reduce the empty loading rate. On ship networking, can realize the emergency rescue, disaster forecast, the weather forecast. On the Internet of things, has realized the product traceability, food safety regulation, etc. In terms of people connected to the Internet, can help care, care for the old man, children, and so on.

Conference, RanCheng, shows her wearing a beidou space-time watch. "This watch looks be like simple, but it can be directly receive beidou satellite navigation signals, time precision is very high, can reach 50 nanoseconds, should be the world's highest precision watch. It can also be positioning, navigation, and other functions such as pedometer, products have entered the market at present." RanCheng said.

RanCheng its introduction, the beidou system has been applied to high precision industry occupied the mainstream market in China. Beidou high-precision card by last year more than 120000 pieces, antenna is 500000, accounting for 30% and 90% of the domestic market. In the first quarter of this year, shipments of smartphones in China, using beidou chips more than 30%.

Application is also one of the most important direction of beidou at sea. Beidou system can quickly position report, at the same time have the short message service, in the mobile communication is not sound, underdeveloped regions, particularly obvious advantages. At present in China has more than 40000 fishing boats in the coastal with the application of the beidou terminals, you can talk with mobile phones for parallel operation, the need of fishermen maritime communication greatly.

China's beidou will become "big dipper of the world"

The development of Chinese satellite navigation system first in the 1970 s, was named the "lighthouse" plan, but the plan due to the limitation of the technology and capital, and finally forced to shelve.

White paper mentioned, the late 20th century, China began to explore development road suitable for the situation of satellite navigation system, gradually formed the three-step development strategy: at the end of 2000, completed beidou system 1, to provide services to China; Built at the end of 2012, beidou no. 2 system, to provide services in the asia-pacific region; Plans to be completed around 2020, beidou system in the world, provide services to the global.

"We and the United States of GPS, glonass, Russia and Europe's Galileo is to carry out the cooperation between the depth of the system. With the cooperation have already completed the two talks between the government, signed an agreement of cooperation talks between the government and the statement." RanCheng its said that China and Russia on the big dipper and glonass system, under the framework of the china-russia prime ministers' regular meeting, set up the big dipper and glonass system between China and Russia cooperation committee, major projects in the project committee, under the mechanism of the two sides held consultations, signed a joint statement and application of the corresponding cooperation agreement. Beidou and Galileo cooperation has completed the frequency of the corresponding coordination, is beginning to establish a cooperation mechanism construction of government level.

"In terms of multilateral cooperation, we have actively participated in the UN and other related organizations. For example, in the United Nations global satellite navigation system under the framework of international committee, China is the original members, has played a more and more important role. In addition, China also actively participates in the international telecommunication union and other organizations." RanCheng said.

"According to preliminary statistics, beidou products, with the function of beidou products, has been to more than 30 countries around the world. The technical cooperation and more than this." RanCheng said, beidou system to improve three points: first, to speed up the construction and implement global coverage as soon as possible; Second, in system construction, to further the pursuit of high reliable, continuous, stable operation; Third, in the terminal application on the development and utilization of products, to continue to intensify efforts to promote formed a complete industrial chain.