Time frequency distribution

Discussion in 'Homework Help' started by bumclouds, Jun 5, 2010.

  1. bumclouds

    Thread Starter Active Member

    May 18, 2008
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    0
    Hey guys,

    I'm doing some past exams at the moment for my electronics course, and in one of the past exams it has a question which I'm totally confused by. It's not in my lecture notes and it doesnt seem to turn up on google (am I typing in the wrong stuff?)..

    It says:

    "Explain what time-frequency analysis means and clarify two isntances where a time-frequency distribution should be used instead of Fourier transform".


    What I think it is referring to is stuff like the top left hand corner figure in this picture. When is it useful over fourier transform? I'm not sure.. Maybe for people to analyse what parts of the RF spectrum are being used by devices, and you can look for empty parts of the RF spectrum to use? Or am I on the wrong track...

    [​IMG]
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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