[time-nuts] GPS tick all over the place. Suspect aurora effects

paul swed paulswedb at gmail.com
Thu Jan 26 18:34:20 EST 2012


I can look but I don't think this program will do anything like that.

On Thu, Jan 26, 2012 at 6:25 PM, <lists at lazygranch.com> wrote:

> Is there something you could record to document this? Odd SNR on a bird?
>
> -----Original Message-----
> From: paul swed <paulswedb at gmail.com>
> Sender: time-nuts-bounces at febo.com
> Date: Thu, 26 Jan 2012 18:15:27
> To: Discussion of precise time and frequency measurement<
> time-nuts at febo.com>
> Reply-To: Discussion of precise time and frequency measurement
>        <time-nuts at febo.com>
> Subject: Re: [time-nuts] GPS tick all over the place. Suspect aurora
> effects
>
> Yup just the first time I have seen the pps this crazy
> But as we speak its settling down. So it was an effect for about an hour.
> Regards
> Paul.
>
> On Thu, Jan 26, 2012 at 5:59 PM, Jim Lux <jimlux at earthlink.net> wrote:
>
> > On 1/26/12 2:08 PM, paul swed wrote:
> >
> >> We are talking parts in the -9th but I am using a hp3801 and the general
> >> software that lets you see the 1 sec variation.
> >> I had never seen this behavior before and thought the oscillator must be
> >> in
> >> trouble. Measured it against a local RB and it was stable.
> >> Then it hit me, could this actually be the effects of the aurora?
> >> I am thinking it just might be.
> >> Regards
> >> Paul
> >> _
> >>
> >
> > google for "Space Weather Effects on GPS"
> >
> > there's a presentaton by Thomas Bogdan at the Space Weather Prediction
> > Center that gives you some numbers to work with.
> >
> > 10s of meters effects aren't unusual.
> >
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