[time-nuts] GPS Spoofing

Tom Holmes tholmes at woh.rr.com
Sat Jul 27 13:30:37 EDT 2013


And engineers.

Tom Holmes, N8ZM
Tipp City, OH
EM79


> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On Behalf Of J.
> Forster
> Sent: Saturday, July 27, 2013 1:21 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] GPS Spoofing
> 
> The failure rate does not matter a whole lot, if you or a loved one are killed or
injured.
> 
> How much comfort is it to a victim, if 1 person, or 5 million people, survived ?
> 
> Failure rates only really matter to actuaries and insurance companies.
> 
> -John
> 
> =====================
> 
> 
> 
> > What is the failure rate?   The number of failures does not matter unless
> > we know the total number of attempts.
> >
> > Do 1% of the ships that leave a harbor to become involved in an
> > accident or is  it more like one in one ten million?
> >
> > I'd bet there are tens of thousands of cases of GPS failures where the
> > user said to himself "darn, it's broken" turned the thing off and went
> > on his way.
> >
> >
> >
> >
> > On Sat, Jul 27, 2013 at 1:51 AM, Robert Atkinson
> > <robert8rpi at yahoo.co.uk>wrote:
> >
> >> It seems you can't rely on the human backup. The UK Marine accident
> >> Investigation Branch Has recorded numerous accidents due to poor
> >> lookout.
> >> See
> >> http://www.maib.gov.uk/cms_resources.cfm?file=/KarinSchepersReportWeb
> >> .pdf http://www.maib.gov.uk/cms_resources.cfm?file=/CoastalIsle.pdf
> >> http://www.maib.gov.uk/cms_resources.cfm?file=/Beaumont.pdf
> >> http://www.maib.gov.uk/cms_resources.cfm?file=/Seagate_ReportWeb.pdf
> >> for recent examplesThe other problem is that AIS, a significant
> >> anti-collision aid, relies on GPS and is susceptable to spoofing.
> >>
> >> Robert G8RPI.
> >>
> >>
> >> ________________________________
> >>  From: Chris Albertson <albertson.chris at gmail.com>
> >> To: jfor at quikus.com; Discussion of precise time and frequency
> >> measurement <time-nuts at febo.com>
> >> Sent: Saturday, 27 July 2013, 4:18
> >> Subject: Re: [time-nuts] GPS Spoofing
> >>
> >>
> >> I boat?  The backup is a competent captain.  He'd see the compass
> >> heading
> >> move and quickly disengage the autopilot.   I had a boat for years  I'd
> >> notice a 5 degree change.  Mine was a sailboat so I'd be more
> >> sensitive to heading changes than a power boater but still the human
> >> is the backup.
> >>
> >> Most autopilots don't directly follow GPS, they use GPS to determine
> >> a heading, follow it then use GPS to detect drift and re-compute the
> >> heading.
> >> the heading would be held by a compass sensor in a low-cost setup or
> >> in a
> >> larger setup a lazer ring gyro backed up by a compass.     So a spoofed
> >> GPS
> >> would cause the autopilot to "think" there was a bigger crooswnd or
> >> current and make a bigger heading change.
> >>
> >> I bet you could hijack a drone not a manned vehicle the pilot is
> >> trained to monitor the automation and he'd very quickly turn it off
> >> thinking it was broken.
> >>
> >>
> >>
> >>
> >>
> >>
> >> On Fri, Jul 26, 2013 at 8:41 AM, J. Forster <jfor at quikus.com> wrote:
> >>
> >> > Prof. Humphry from Texas just reported being able to spoof GPS in
> >> > the
> >> Med
> >> > and take over the nav system of a luxury yacht. He's done this
> >> > before
> >> with
> >> > a drone in the US.
> >> >
> >> > LORAN as a backup, at least?
> >> >
> >> > -John
> >> >
> >> > ==============
> >> >
> >> >
> >> >
> >> > _______________________________________________
> >> > time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go to
> >> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> >> > and follow the instructions there.
> >> >
> >>
> >>
> >>
> >> --
> >>
> >> Chris Albertson
> >> Redondo Beach, California
> >> _______________________________________________
> >> time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go to
> >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> >> and follow the instructions there.
> >> _______________________________________________
> >> time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go to
> >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> >> and follow the instructions there.
> >>
> >
> >
> >
> > --
> >
> > Chris Albertson
> > Redondo Beach, California
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go to
> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > and follow the instructions there.
> >
> >
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go to
https://www.febo.com/cgi-
> bin/mailman/listinfo/time-nuts
> and follow the instructions there.



More information about the time-nuts mailing list