GPS application

　　Ship ocean navigation and water entry into Hong Kong

　　Guidance and entry of aircraft routes

　　Autonomous navigation

　　Ground vehicle tracking and urban intelligent traffic management

　　Emergency life

　　Personal tourism and field adventure

　　Personal communication terminal (integrated with mobile phones, PDA, electronic maps, etc.)

　　The time of electricity, post and telecommunications, communication and other networks synchronize

　　Expert time granting

　　Expert in accurate frequency

　　All levels of earth measurement, control measurement

　　Putting the road and various routes

　　Underwater terrain measurement

　　Charter variable measurement, dam and large buildings deformation monitoring

　　GIS application

　　Construction machinery (tire crane, bulldozer, etc.) control

　　Fine agriculture

　　The application of GPS in road engineering

　　The application of GPS in road engineering is mainly used to establish various road engineering control networks and determine air measurement external control points. With the rapid development of high -level highways, higher requirements have been put forward on survey technology. Due to the length of the lines, it is known that there are fewer points. Therefore, it is not only difficult to use conventional measurement methods, but also difficult to meet high -precision requirements. Today, the domestic GPS technology has gradually established a high -precision control network of the first level of the line, and then the wire encryption is set by a conventional method. Practice has proved that the point error within dozens of kilometers is only about 2 cm, which has reached accuracy that is difficult to achieve in conventional methods, and at the same time, it also greatly advances the construction period. GPS technology is also applied to the control measurement of super bridge. Because there is no need to conduct vision, it can constitute a strong mesh, improve the accuracy of the point, and at the same time is also very effective for detecting the fulcrum of conventional measurement. GPS technology also has a wide range of application prospects in tunnel measurement. GPS measurement does not need to be integrated, reducing the intermediate link of conventional methods. Therefore, it is fast and accurate and has obvious economic and social benefits.

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