What is the difference between gps and gnss

Differences: 1. Different definitions. GPS refers to the Global Positioning System, which is a high-precision radio navigation positioning system based on aerial satellites; while GNSS refers to the Global Navigation Satellite System, which uses pseudo satellites of a group of satellites. Observations such as distance, ephemeris, satellite launch time, etc. 2. Different applications. GPS is mainly used for navigation and positioning. It has attracted many users with its high accuracy, all-weather, global coverage, convenience and flexibility; GNSS can provide users with all-weather 3D coordinates at any location on the earth's surface or near-earth space. and speed and time information space-based radio navigation and positioning systems.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What is gps

GPS positioning satellite, a system that performs real-time positioning and navigation on a global scale, is called the global satellite positioning system. Referred to as GPS. GPS is an all-round, all-weather, all-time, and high-precision satellite navigation system developed by the U.S. Department of Defense. It can provide low-cost, high-precision three-dimensional position, speed, and precise timing navigation information to users around the world. It is It is a model application of satellite communication technology in the field of navigation. It has greatly improved the informatization level of the earth's society and effectively promoted the development of the digital economy.

What is GNSS

The full name of GNSS is Global Navigation Satellite System, GNSS is Global Navigation Satellite System) global Satellite navigation system is the same name for individual satellite navigation and positioning systems such as Beidou system, GPS, GLONASS, and Galileo system. It can also refer to their enhanced systems, and also refers to all these satellite navigation and positioning systems and their enhanced systems. An additive mixture, that is to say, it is a large system composed of multiple satellite navigation and positioning systems and their enhanced systems. GNSS is a star-shaped radio navigation system that uses artificial satellites as navigation stations. It provides global land, sea, and Various military and civilian carriers in the air and space provide all-weather, high-precision position, speed and time information, because it is also called a space-based positioning, navigation and timing system.

The international GNSS system is a multi-system, multi-GPS positioning system. The working principle is that the ground master control station collects observation data and meteorological information from each monitoring station, and calculates the ephemeris and satellite clock correction number of each satellite. Edit the navigation message according to the prescribed format, and inject this information into the GPS satellite through the injection station on the ground. When measuring and positioning, the user can use the receiver's stored ephemeris to obtain the rough position of each satellite. Based on these data and its own position, the computer selects four satellites with larger angles between the satellites and the user line as observation objects.

The difference between GPS and GNSS

1. Different definitions:

GPS: refers to the Global Positioning System , GPS) is a high-precision radio navigation positioning system based on aerial satellites

GNSS: refers to the global navigation satellite system, which uses the pseudorange, ephemeris, satellite launch time and other observations of a group of satellites .

2. Different applications:

GPS: Mainly used for navigation and positioning. Since the advent of GPS, it has attracted many users with its high accuracy, all-weather, global coverage, convenience and flexibility.

GNSS: Global Navigation Satellite System is a space-based radio navigation and positioning system that can provide users with all-weather 3D coordinates, speed and time information at any location on the earth's surface or near-Earth space.

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