GLONASS system (GLONASS) was first developed in Soviet times, and the program was continued by Russia. Russia began to build its own global satellite navigation system in 1993. The system began op...
The function of the GPS receiving antenna is to convert the electromagnetic wave energy of the radio signal from the satellite into the current that the receiver electronic device can ingest and a...
A four-armed helical antenna consists of four specially curved metal lines. No grounding is required. It has the characteristics of a Zapper antenna, and also has the characteristics of a vertical...
China Beidou Satellite Navigation System (BDS) is a global satellite navigation system developed by China. On June 23, 2020, the 55th satellite was launched, and the global network was completed. ...
GPS map is a brand-new geographic information carrier produced with the development of computer technology. GPS map is born out of map, and the map is stored and presented in digital form, and can...
The market potential of China's GPS navigation is huge. By the end of 2005, China had less than 100,000 vehicles with in-vehicle navigation equipment, and the penetration rate was less than 1%...
1. Excellent quality, complete certification, safety first When choosing GPS navigation products, the configuration of software and hardware is very important. Generally speaking, the hardware con...
American GPS: It was designed and developed by the U.S. Department of Defense in the early 1970s and completed in 1993. In 1994, the United States announced that it would provide the world with th...
With the accelerated pace of urban construction and renovation in my country, urban roads are constantly being built, and the intricate road traffic has even spawned a group of road-guided profess...