Based on the principle of the GPS system, the GPS receiver strongly depends on receiving satellite signals directly. In other words, it depends heavily on the range of the sky the receiver "s...
Prepare spare batteries, compass and paper map before departure. Clear the TRACK and odometer in GPS after arriving at the mountain entrance. Because people often have to travel tens of thousands...
The accuracy of GPS is changing every second: the satellite orbit is changing, the ionosphere is changing (the energy difference between day and night is several times), and the temperature, humidit...
Generally, L1 carrier of GPS system is used for civil GPS, and the frequency is 1575.42 MHz. Two different pseudo-random noise codes, C/A code and P code, are loaded on this carrier frequency in a...
Relevant departments predict that by the end of 2005, the level of passenger traffic will reach 18 billion person times of road passenger traffic annually; The total number of passenger cars opera...
GPS, a product used in American military, has entered China for more than 10 years. However, this decade is also a period of rapid economic development in China. With the rapid development of Chin...
If the general differential GPS technology is used, each vehicle shall receive the differential correction number, which will cause the system to be too complex, so the centralized differential te...
As long as the computer that can access the Internet is installed with our positioning software, the vehicle can be located for a single time in the country, and the final location query can be ca...
If we talked about GPS ten years ago, we believe that few people know what it is. But with the rapid development of science and technology, GPS has experienced a development process from no one kn...
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