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Detecting objects by radar

  1. Mar 18, 2014 #1

    utkarshakash

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    1. The problem statement, all variables and given/known data
    A radar has power 1kW and is operating at a frequency of 10GHz. It is located on a mountain top of height 500m. The maximum distance upto which it can detect object located on the surface of the earth(Radius of earth = 6.4*10^6 m) is


    2. Relevant equations

    3. The attempt at a solution
    I'm not sure what to do here because I'm facing this kind of problem for the first time. Can anyone suggest me some equations to start with?
     
  2. jcsd
  3. Mar 18, 2014 #2
    D = sqrt(2*height*radius) I think
     
  4. Mar 18, 2014 #3

    utkarshakash

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    This gives me the correct answer but how did you think of this? Can you give some references regarding this equation?
     
  5. Mar 18, 2014 #4

    BvU

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