Which country invented GPS?

The global positioning system was invented in America. GPS was started as a project of the US military in 1958 and put into use in 1964. In 1970s, the United States army, navy and air force jointly developed a new generation of satellite positioning system GPS.

The main purpose is to provide real-time, all-weather and global navigation services for land, sea and air, and to be used for some military purposes such as intelligence gathering, nuclear explosion monitoring and emergency communication. After more than 20 years of research and experiments, it cost 30 billion dollars. By 1994, 24 GPS satellite constellations with 98% global coverage have been deployed.

GPS is an omni-directional, all-weather, all-day and high-precision satellite navigation system developed by the US Department of Defense. It can provide users around the world with low-cost and high-precision three-dimensional navigation information such as position, speed and accurate timing. It is a typical application of satellite communication technology in navigation field, which greatly improves the information level of the earth society and effectively promotes the development of digital economy.

Advantages of extended data GPS

1, free of installation, can be placed at will. The working power of the installation-free GPS locator comes from its built-in battery, which can be placed anywhere in the carriage at will, and can also be strongly attracted to hidden places such as the bottom of the car.

2. Small size and strong concealment. Because it is not bound by the power cord, the installation-free GPS locator can be placed at will, for example, it is difficult to be found in hidden places such as car chassis, seats and lamp posts.

3, it is not easy to be disturbed by detection. Because the wireless GPS locator must wake up at the specified time, the monitoring time can be mastered, which is more flexible and effectively avoids the interference of signal shielding or detectors to a great extent.

Baidu encyclopedia -GPS