ASTRONOMY

The Fourier transform is not just limited to simple lab examples. When used in real situations it can have far reaching implications about the world around us.

Take for example the field of astronomy. Some times it isn’t possible to get all the information you need from a normal telescope and you need to use radio waves or radar instead of light. These radar signals are treated just like any other ordinary time varying voltage signal and can be processed digitally.

One recent example of this technique was the NASA Magellan satellite which was released from the space shuttle Atlantis on 4th May 1989 and sent to Venus on a 15 month journey that took it one and a half times around the sun.

Source: http://w.astro.berkeley.edu/~jrg/ngst/fft/astronmy.html

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