15855Re: [SeattleRobotics] Re: SRF08 beam angle
- Dec 1, 2003The 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.
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