The mesosphere i think
If they are in the atmosphere (low earth orbit), satellites are in the ionosphere. If they are in higher orbits, satellites are considered to be outside the atmosphere.
Thermosphere and the exosphere
thermosphere
Satellites and the space shuttle orbit in the thermosphere, a layer of the Earth's atmosphere located between the mesosphere and exosphere. Temperatures in the thermosphere can reach up to 2,500°C due to the absorption of solar radiation.
Most communications satellites operate outside of the earth's atmosphere. The GPS satellites are about 23,000 miles from the surface of the earth.
exosphere
exosphere
Orbiting satellites are typically found in the thermosphere layer of the atmosphere, which extends from about 80 to 600 kilometers above the Earth's surface. This layer is where the density of gas molecules is low enough for satellites to orbit without experiencing significant atmospheric drag.
Satellites are located in the exosphere because it is the outermost layer of Earth's atmosphere and provides an ideal environment for satellites to orbit without encountering significant atmospheric drag. This allows satellites to continuously orbit the Earth and perform their intended functions, such as communication, Earth observation, and navigation.
Satellites orbit Earth in the thermosphere and exosphere, which are the upper layers of the Earth's atmosphere. The exosphere is the outermost layer of the atmosphere where most satellites, particularly those in geostationary orbit, are found.
SatellitesSatellites orbit in outer space, not in the earth. They are sent to outer space where the gravitational pull of the earth pulls them around, just as the earth is pulled around the sun in a similar manner. The layer is the exosphere. It greatly depends on what the satellite is for and who owns it how far up it orbits. Imaging satellites need to be close to the Earth, so they orbit about 130 miles up. Communications satellites are generally at 23,000 miles up. GPS satellites are up about 13,000 miles.
The layer containing ozone is the ozone layer. It is located in the stratospheric region of the atmosphere.