Re: NASA to begin using lasers for communications?
From: RichA (none_at_none.com)
Date: 02/13/05
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Date: Sun, 13 Feb 2005 11:26:04 -0500
On Sun, 13 Feb 2005 00:10:05 -0800, Mike Simmons
<mikes@nospam.mtwilson.edu> wrote:
>On Sat, 12 Feb 2005 17:13:09 -0500, RichA wrote:
>
>> Line-of-sight lasers for communications
>> of space probes with Earth. Will allow
>> massive increases in bandwidth and quality
>> of the images and data. Testing is going
>> on. Issues include hitting Earth-based
>> aircraft by accident, clouds, etc.
>> These laser-based comm systems also consume
>> far less power than traditional radio-freq
>> based systems.
>
>Rich,
>
>I know of a JPL group testing this with a 2.5-meter and a spacecraft at
>Mars but it seems to have died prematurely about a year ago. I don't know
>if that's because of funding problems or because it wasn't working out. Do
>you have anything specific on current projects?
>
>Mike Simmons
http://www.photonics.com/spectra/applications/XQ/ASP/aoaid.368/QX/read.htm
I thought it was current. The Dec. issue of Photonics magazine had
an article on it. They use a cassegrain, and a radar sensor attached
to the scope that makes sure no planes are in the vicinity of the
laser beam itself.
-Rich
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