They don't use the military "P-code", so it's the L1 frequency, 1575.42 MHz
that is being affected. Anything +/- 50 MHz or so would be suspect. Could
be a spur from an IF on something using a higher frequency, too.
On 11/07/12 09:50, Zac Flamig wrote:
> Just in case any of you guys know something...
>
> Zac
>
>
> -------- Original Message --------
> Subject: Fwd: GPS Interference
> Date: Wed, 07 Nov 2012 05:33:35 -0600
> From: Bob Staples <[log in to unmask]>
> To: [log in to unmask]
>
>
>
> Please note the email from Forest Mitchell ( WFO) and advice me of anyone
> you know or that may be conducting experiments that would interfere with
> the GPS signal ?
>
> Thanks,
> Bob D Staples
>
>
> -------- Original Message --------
> Subject: GPS Interference
> Date: Wed, 07 Nov 2012 04:20:17 -0600
> From: Forrest Mitchell <[log in to unmask]>
> To: Bob Staples <[log in to unmask]>
> CC: David Andra <[log in to unmask]>, [log in to unmask],
> [log in to unmask], John Pike <[log in to unmask]>, Daryl Williams
> <[log in to unmask]>, Doug Speheger <[log in to unmask]>, Rick
> Smith <[log in to unmask]>
>
>
>
> In the past week, we have been experiencing interference with acquiring
> a GPS signal for the radiosondes we launch for Upper Air flights. The
> GPS signal is critical towards acquiring accurate wind data aloft.
>
> The interference is centered around the NWC, as measured by coworkers
> using a variety of GPS devices. The interference occurs during the
> afternoons, affecting us
> during our launch window from 5-6:30 pm. It then disappears around 7
> pm. There is no interference during the morning flights.
>
> Is there some experiment being performed by someone within the NWS
> community that could be causing the interference? We would appreciate
> your efforts to find the source
> so that we may create a solution to allow us to perform our mission in
> its entirety. Thank you.
>
>
>
>
>
>
>
--
Peter Laws / N5UWY
National Weather Center / Network Operations Center
University of Oklahoma Information Technology
[log in to unmask]
College of Architecture, Regional and City Planning, MRCP '16
--------------------------------------------------------------------------
Feedback? Contact my director, Matt Younkins, [log in to unmask] Thank you!
|
