Fortune Telling Collection - Horoscope - What is the function of navigation satellite?
What is the function of navigation satellite?
At present, the most widely used global satellite navigation and positioning system in the world is the American GPS system. It adopts the principle of time ranging and positioning, and can carry out all-weather, real-time high-precision three-dimensional positioning, speed measurement and accurate timing for various mobile users such as ground vehicles, maritime ships, airplanes, missiles, satellites and spaceships.
The GPS system is a constellation consisting of 24 satellites distributed in six orbital planes. The orbit height of GPS satellite is 20000km, and the satellite is equipped with 10- 13 high-precision atomic clock. There is a main control station and several monitoring stations on the ground, which regularly measure the precise position and time of the satellites in the constellation and send ephemeris information to the satellites. Users can determine their latitude, longitude, altitude and accurate time by receiving signals from more than four satellites at the same time through GPS receivers.
Military positioning accuracy of GPS system
Russia has a similar system called GLONASS system. However, due to Russia's economic difficulties and short satellite life, it is impossible to maintain enough constellations, which affects its normal function.
Europe's Galileo system also belongs to the navigation satellite constellation, which may be launched in recent years.
- Related articles
- Sanguan female constellation
- Scorpio is Libra's doomed constellation?
- What are the four constellations that will rebound if you can't beat them?
- Who is the richest in the twelve constellations?
- What are the names of the stars in the sky?
- For example, if you buy a car of 1 10,000 yuan, how much do you need to pay down? How much is the mortgage? For example, pay it off in two years, and how much interest is it every month? Pay more ever
- What are the constellations that are careful, like quiet and live alone?
- Youth has you 2. Who will debut? Youth has you 2. Analysis of the list of debutantes.
- What is the constellation of Lunar 201February 4 19? What is the fortune?
- Twelve Constellation Pairing _ Twelve Constellation Pairing Table