At present, the positioning accuracy provided by the GPS system is better than 10m. To obtain higher positioning accuracy, we usually use the differential GPS technology: place a GPS receiver on t...
Before the appearance of satellite positioning system, remote navigation and positioning mainly used wireless navigation system. 1. Radio navigation system Roland -- C: working at 100KHZ, compos...
The basic principle of GPS positioning is to determine the position of the point to be measured by using the method of space distance resection based on the instantaneous position of the high-spee...
GPS is a mature technology, but in China, civil product development is not very popular, mainly concentrated in navigation equipment. In schools, information about teachers' work and students&...
In order to solve the problem of inaccurate ringing time of existing school bell equipment, we must have an accurate timing system and a reliable device to control the ringing, both of which are i...
Accurate time is necessary for astronomical observation. The accurate pointing of astronomical telescope in a specific time, the control of CCD exposure time and the high precision synchronization...
1.1 Introduction to GPS GPS (Global Positioning System) is a new generation of satellite navigation, time service and positioning system developed by the United States in the 1970s. Each of the 2...
GPS radar detector can not only be used for speed detection radar alarm, but also for traffic light electronic eye warning; Whether the electronic eye is detected by a radar wave laser or by a gro...
China's Beidou Satellite Navigation System is abbreviated as Beidou System (BDS). It is a global satellite navigation system that is independently developed, created and operated by China and ...
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