I know that they search for radio signals, but I don't know specifically how they do it. Please tell me, thank you.
2006-11-10 03:18:59 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
Not only do they search for radio signals, but they search for patterns or data within the signals.
This is accomplished with many listening stations and some distributed resource calculations. They get volunteers to run some of the code on home PCs.
The code executes a Fast Fourier Transform and converts the raw signal into frequencies. Noise is quickly discernible from a signal. Then it has to be proved that this was not from a terrestrial source of from a man-made satellite.
So far no luck.
2006-11-10 04:05:28 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The idea is that intelligent life would use radio signals to communicate, in the same way we do. So we search the radio frequencies for any transmissions coming from space that do not appear natural.
2006-11-10 11:20:25 · answer #2 · answered by Kutekymmee 6 · 0⤊ 0⤋
The answer is not how but why? If we get anything even remotely close to what may be a signal and we respond we won't get an answer for about 1000 generations anyway.
I could think of a million better things to spend taxpayers money on.
2006-11-10 12:02:07 · answer #3 · answered by robertf_9999 1 · 0⤊ 0⤋
Radio telescopes, scanning on millions of different frequencies at the same time.
See ref.
2006-11-10 11:20:01 · answer #4 · answered by WHY? 3 · 0⤊ 0⤋
They look under the cushions and round behind the doors and in any other little places that loose change may fall!
2006-11-10 11:20:49 · answer #5 · answered by druboy 3 · 0⤊ 3⤋
Dont bother they dont exist. Trust me I' ve tried
2006-11-10 11:20:53 · answer #6 · answered by EJ 1 · 0⤊ 2⤋