[time-nuts] GPS usable for weather forecasting?

Bob Camp lists at rtty.us
Sat Mar 30 08:31:49 EDT 2013


If you go back into the papers from the early 1980's there is one where they used a high gain antenna and no knowledge of the coding scheme to pull timing off of GPS. I believe it was at White Sands, but that could be wrong. 


On Mar 29, 2013, at 11:42 PM, Stewart Cobb <stewart.cobb at gmail.com> wrote:

>> I wonder if you cannot do this same work from the ground.  Has anyone
> tried
>> tracking single GPS satellites from the ground using very high gain
>> tracking antenna.
> Many times. USAF does this each time they launch a new GPS satellite, to
> check out all the kit in a "high-res" view before they switch it on for
> general use. They used to use an antenna at Camp Parks in the California
> central valley. When that one was being overhauled a few years ago, they
> used Stanford's "big dish" for a while. It gives about 60 dB gain at L1,
> Hardcore GPS researchers have used that dish and a bunch of others over the
> years. If you're interested, contact SRI. They used to charge a couple of
> hundred bucks an hour for the Stanford dish.
> Hard to use for weather forecasting, though, because you can only see one
> tiny chunk of atmosphere at a time.
> Cheers!
> --Stu
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