With smart devices as the platform application, it presents a variety of development. From the combination of GPS applications, smartphones can achieve positioning, navigation applications, and GPS technology is still continuously developing. The future Galileo (Galileo) system may replace the existing GPS system, Galileo system, Galileo system It is developed by the European Space Agency to replace the existing GPS system. The system is expected to be put into operation in 2009.

　　Before describing the advantages of the Galileo system, let's take a look at the existing GPS system. One of them is worthy of attention. The existing GPS system was developed for war. Due to historical reasons at that time, this means that the US Department of Defense has the entire GPS system. The control of control may not provide services to global users at any time for some reasons, and of course it is unlikely to happen in today's era. Looking at the advantages of the Galileo system, the original intention of the entire system is designed for civilian use. It can continuously run real -time services to users. In addition, it will be divided into three services, one of which is free and supports continuous work. The system will report an error in any type of errors before, which is particularly important in high -risk work.

　　In addition, the Galileo system provides higher positioning accuracy than the existing GPS system. With the continuous development of technology, it will provide a larger coverage and make it possible for elephants to be used in extended polar applications. In short, Galileo system increases satellites to 30, and places the satellite at a high altitude of 30,000 km. The system will provide better GPS technology. In the future, the system will be officially put into operation. For the platform, you can get more accurate positioning applications. Smart devices are also continuously developing. Traditional mobile phones, palm computer, etc. can not meet the needs of the market. Integration is the way to develop smartphones. With the launch of GPS mobile phone chips, it can be seen that the development of smartphones is in harmony with other others. The strengths of smart devices make their functions more and more complete, and applications are becoming more and more diverse!

　　Before WASS, there are also ground -based base stations to improve positioning accuracy, set up some base stations to receive GPS satellite signals on the surface, modify the received signal data received by the base station, and send the correct signal from the ground base station. These signals can also be GPS. The receiver was received. The disadvantage of this method is that enough ground base stations must be established for maintenance, and the regionality must be obvious.

　　In the face of whether the final choice is used to use this auxiliary system, the advantage is to improve the positioning accuracy, but at the same time, GPS must process more data, which means that it consumes more electricity to obtain a limited positioning accuracy. Accurate positioning is often used in professional scientific computing fields. It should be a little irrelevant to navigation. For car navigation, the error of 5 meters can be ignored.

　　You can also use GPS if you leave the highway

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