What Is the Doppler Effect?

By jamie

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9. Satellite Communication

There are many manmade satellites currently orbiting our planet. They are mostly used for communication and they are very effective because signals can be sent to satellites from the ground, from which they can bounce off to reach a receiver elsewhere in the world.

This allows us to overcome the problem of the curvature of Earth when sending messages over long distances. Satellites are not static; constantly moving in relation to ground relays and to other satellites. The Doppler effect will have an impact on the frequency of radio waves being transmitted, potentially causing signals to become unusable. Thus, frequencies are adjusted to help satellites overcome this problem.

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