Sihai network

Japan develops new GPS technology to reduce the error to less than one centimeter

According to relevant media reports, Mitsubishi Electric, NEC and JAXA are jointly developing the world's highest precision positioning technology based on the new generation of satellites. It is said that this technology can reduce the error of GPS to less than 1cm.

In January, the Japanese government formulated the basic plan of the universe, which will position the "quasi zenith satellite" known as the Japanese version of GPS as the pillar of the growth strategy. Precise positioning technology will promote the development of various services in Japan, and it is also expected to obtain demand overseas. It is predicted that the market size of positioning services in the Asia Pacific region will reach 4 trillion yen (about 253.1 billion yuan) per year.

At present, Japan uses American satellites to obtain positioning data, and the positioning error is about 10 meters. The Japanese government plans to deploy more than three quasi zenith satellites flying over Japan. Even if the GPS data of the United States is also used, the positioning error can be reduced to less than one meter. Mitsubishi Electric has developed a technology to reduce the error to about 1-2cm.

In the space near the universe, there is a reflection layer. The data used to determine the location can be confused by these factors. Mitsubishi Electric has developed a device that uses advanced analytical technology to correct data. The corrected data can be transmitted from JAXA communication base to quasi zenith satellite, which can greatly improve the positioning accuracy. NEC is responsible for developing a new generation of communication technology for data exchange between satellite and ground.

The Japanese government will build satellite and base station equipment in 2018, and then private enterprises can provide accurate positioning services 24 hours a day. In July, the GPS related Council, attended by about 200 enterprises such as Toshiba and Honda, will begin to operate. Companies want to lead the world in use development and grow it into a growth business.

If the chip receiving location information is embedded in the vehicle and railway vehicle, the signal control, traffic navigation and automatic driving of railway vehicle can be avoided. Because it can recognize the lane, it will become the basic technology of driverless vehicle in the future. In addition, the technology will promote the unmanned operation of construction machinery and agricultural machinery. It can also be used to grasp the growth of grain and spray and harvest pesticides more efficiently.

If a special chip is embedded in a terminal such as a smart phone, you can more accurately confirm your location and successfully reach your destination. In the event of a disaster, the flow of people can be correctly grasped and the escape passage can be accurately indicated.

The Japanese government plans to promote quasi zenith satellite equipment centered on emerging Asian countries. In some Asian countries, because Japan's Quasi zenith satellite can be directly used, accurate positioning services can be obtained by investing 100 billion yen (6.3 billion yuan) in the construction of relevant ground equipment.

The usage fee of positioning service has not been determined. In order to popularize this service in Japan and abroad, private enterprises need to develop low-cost vehicle receiving terminals that can receive quasi zenith satellite information. If the technology can be successfully completed, it will become the basic technology of the new generation of transportation system, such as automobile and railway driverless.