High precision GPS measurement must use carrier phase observation values. RTK positioning technology is a real-time dynamic positioning technology based on carrier phase observation values, which ...
GPS antennas can be divided into vertical polarization and circular polarization in terms of polarization mode. The effect of vertical polarization is not as good as that of circular polarization...
Many car owners have purchased a dash cam, but they are not very familiar with the wiring. Below, the dash cam manufacturer will share with you how to connect the dash cam. 1. ACC power supply. G...
1. It is fixedly installed in the audio position of the dashboard on the car, without a built-in battery. The power cord is directly connected to the car power supply, does not occupy the cigarett...
It is a terminal equipped with a built-in GPS module and a mobile communication module, used to transmit the positioning data obtained by the GPS module to a server on the Internet through a mobile ...
24 GPS satellites orbit the Earth at an altitude of 22000 kilometers above the ground in a 12 hour cycle, allowing for simultaneous observation of more than 4 satellites at any point on the ground...
1. Anti theft positioning: It mainly uses SIM base station behavior to locate, which is commonly seen as the white box and communication tower of China Mobile Unicom. The operation method is very ...
1. Monitoring the internal environment of buses The bus is a densely populated and enclosed mobile public place, and its security situation is relatively complex. Disputes between drivers, passen...
GPS updates its coordinate information once a second, so it can record its own motion trajectory. Generally, GPS can record more than 1024 footprint points and display the movement trajectory at a...
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