Rayleigh beacon for measuring the surface profile of a radio telescope.

نویسنده

  • S Padin
چکیده

Millimeter-wavelength Rayleigh scattering from water droplets in a cloud is proposed as a means of generating a bright beacon for measuring the surface profile of a radio telescope. A λ=3  mm transmitter, with an output power of a few watts, illuminating a stratiform cloud, can generate a beacon with the same flux as Mars in 10 GHz bandwidth, but the beacon has a narrow line width, so it is extremely bright. The key advantage of the beacon is that it can be used at any time, and positioned anywhere in the sky, as long as there are clouds.

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عنوان ژورنال:
  • Applied optics

دوره 53 34  شماره 

صفحات  -

تاریخ انتشار 2014