The geostationary meteorological satellite is relatively stationary with the earth, and what is synchronous with the earth?

Geostationary meteorological satellite is a meteorological satellite working in geosynchronous orbit over the equator, which runs synchronously with the earth's rotation and is relatively static.

If a synchronous satellite is launched to the equatorial plane, and the time for the satellite to rotate once in orbit is the same as the time for the earth to rotate, then the satellite always stays somewhere above the equator. From the ground, the satellite is still in the air. When the orbital inclination of a geosynchronous satellite is zero, it becomes a geostationary satellite.

Advantages of geostationary meteorological satellites

The use of geostationary satellite technology in ocean observation has many advantages:

1, the geostationary orbit satellite has a wide field of vision, and a remote sensing instrument can observe the area of the earth near 1/3.

2. The attitude can be adjusted quickly at any time, and the mission of the satellite can be rearranged very conveniently, so the observation area can be adjusted at any time to capture and track the area of interest in time.

3. Because the area of interest is usually imaged by an area camera, we can improve the remote sensing image quality of the observation area by increasing the integration time and accumulating for many times, so as to carry out continuous observation.

4. The area of interest can be continuously observed, so it can continuously provide data and image support for various emergencies. For example, the region of interest can be imaged about 8 times a day in the visible light band, which has great performance improvement and practical significance compared with the observation once a day by polar-orbiting satellites.