1. Define the ionosphere as an ionized region of the earth's atmosphere. The entire earth's atmosphere above 60 kilometers is in a partially ionized or fully ionized state. The ionosphere is a partially ionized area of the atmosphere, and the fully ionized area of the atmosphere is called the magnetosphere. Some people call the entire ionized atmosphere the ionosphere, so that the magnetosphere is regarded as a part of the ionosphere. Approximately 10 to 80 kilometers from the earth's surface. The dissipation layer is above the warm layer and is composed of charged particles.
2. Features
Except for Earth, Venus, Mars and Jupiter all have ionospheres. The ionosphere stretches from about 50 kilometers above the ground to the upper atmosphere of the earth at a height of about 1,000 kilometers. There are quite a lot of free electrons and ions, which can cause radio waves to change the propagation speed, refraction, reflection, and scattering, and polarization The rotation of the surface is absorbed in varying degrees.