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15855Re: [SeattleRobotics] Re: SRF08 beam angle

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  • LJGeib@aol.com
    Dec 1, 2003
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      The other thing you can do, (besides a larger aperture), is to decrease the
      wavelength(increase the frequency) of the sound waves. That's the difference
      between detection and target acquisition radar and sonar.


      In a message dated 12/1/03 6:09:44 PM Pacific Standard Time, Hagar@...
      The beam angle in usually related to the diameter of the radiating surface.
      The larger the diameter, the smaller the beam angle. For air you will need
      something like 2: diameter or so. to get 30
      degrees total angle.


      [Non-text portions of this message have been removed]
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