Motor vehicles, computers and wireless communication technology gradually change people's lives, just like automobile, as a travel tool, it develops in the direction multi-functional. Its intelligence and network are the inevitable development of the information society. Onboard computer, based on the embedded technology, is the first choice for automotive electronic devices.

Hiinfo® onboard computer belongs to automotive electronic products, which relies on the computer, combines global positioning satellite navigation, wireless communications, mobile storage, multimedia, and other technology to form a powerful set of Onboardd Intelligent Information System. GPS positioning navigation may plan travel routes and navigation, vehicle tracking and so on.

I. Brief introduction to GPS
GPS is the Global Positioning System. In simple terms, this is a satellite system consisting of 24global coverage satellites. The system can guarantee that at any moment, any point on Earth, there are four satellites can be observed at the same time, to ensure that the satellites can collect the latitude, longitude and height of the observation points, in order to achieve navigation, positioning and timing capabilities. This technology can be used to guide the planes, ships, vehicles, as well as person, follow the selected routes safely and accurately to their destinations on time.

Global Positioning System (GPS) is the 1970s by the United States navy, and air force joint development of a new generation of space satellite navigation and positioning system. Its main purpose is to land, sea and air three major areas to provide real-time, all-weather, and global navigation services, and for intelligence gathering, monitoring and nuclear emergency communications and other military purposes, the United States dominate the global strategy is an important component. After more than 20 years of research experiment, costing 30 billion US dollars, and in March 1994, the 24 GPS satellite constellation whose global coverage up to 98% was completed emplaced.

GPS satellite global positioning system consists of three parts: the space segment - GPS constellation; ground control part - the ground control system; users’ equipment part - GPS signal receiver.

Features of GPS system: high-precision, all-weather, high-efficiency, multi-purpose, easy to operate, widely used, etc.

II. GPS features of Hiinfo® onboard computer
1. High positioning accuracy
Practice has proved that the relative positioning accuracy of GPS within 50 KM up to 10-6,100-500 KM up to 10-7,1000 KM up to 10-9. In 300-1500 M engineering precision positioning, the observation of more than one hour of its flat plane of its position error is less than 1 mm.

2. Simple operation
High degree of automation, has reached "idiots" level; the whole machine with small size, and light weight, greatly eases the inside space and equipment space conflicts, and makes operation become relaxed and happy.

3. All-weather operations