http://rt.com/usa/news/texas-1000-us-government-906/
Dave
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Hi Dave:
The article shows a photo of a Predator, yet what the UoT guys did was hack a toy helicopter that used only the L1
civilian GPS signal.
My guess is that they used a home made 3rd generation GPS simulator with a
moderate power amp and antenna.
http://www.prc68.com/I/5001A.html - first
The picture is not of a Predator, it's a Global Hawk, a much larger
aircraft.
Didier KO4BB
On Jun 28, 2012 11:47 AM, Brooke Clarke bro...@pacific.net wrote:
Hi Dave:
The article shows a photo of a Predator, yet what the UoT guys did was
hack a toy helicopter that used only the L1 civilian
And not the UAV of the story, I'm sure.
-John
=
The picture is not of a Predator, it's a Global Hawk, a much larger
aircraft.
Didier KO4BB
On Jun 28, 2012 11:47 AM, Brooke Clarke bro...@pacific.net wrote:
Hi Dave:
The article shows a photo of a Predator, yet what the
I can't imagine that we don't sanity check without baro , altimeters . Isn't
that the inspiration
for the Kalman filter ?
--- On Thu, 6/28/12, J. Forster j...@quikus.com wrote:
From: J. Forster j...@quikus.com
Subject: Re: [time-nuts] Spoofing GPS - news article
To: Discussion of precise
Hi Steve:
It's my understanding that they do have baro altimeters, gyros and
accelerometers plus some other flight stability inputs.
But . . . they seem to be vulnerable to some forms of GPS jamming or spoofing.
If jamming started out with the same satellite positions as were currently in the
Interesting this idea: mounting a bottom GPS antenna to check for
unexpected signals... and you don't need a complete GPS receiver maybe only
a sort of selective field strength meter or something like the codeless GPS
receiver used by Vaisala on their radiosondes.
On Wed, Jun 27, 2012 at 6:45 AM,
On 6/25/12 7:11 PM, Chris Albertson wrote:
On Mon, Jun 25, 2012 at 6:43 PM,li...@lazygranch.com wrote:
Yeah, I read it. Typical Fox. The headline isn't accurate since they
spoofed the civilian GPS system, not the military GPS.
I think it is. Currently the military uses GPS guided drones
Whether it's spoofing or jamming, domestic drones are becoming ubiquitous,
because they are just so tempting, and sooner or later one is gonna crash
onto a populated area, either by accident or deliberate mischief.
A piloted aircraft may be able to avoid hitting a school; a drone may not.
-John
On 6/26/12 3:38 PM, J. Forster wrote:
Whether it's spoofing or jamming, domestic drones are becoming ubiquitous,
because they are just so tempting, and sooner or later one is gonna crash
onto a populated area, either by accident or deliberate mischief.
A piloted aircraft may be able to avoid
IMO, your failure rate estimate does not include the probability that some
people might not like being spied on by UAVs.
I can easily see a market for ground based GPS jammers, especially, in the
more rugged, fertile, and inaccessible areas of California.
YMMV,
-John
=
On
Jun 2012 16:42:16
To: Discussion of precise time and frequency measurementtime-nuts@febo.com
Reply-To: j...@quikus.com, Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] Spoofing GPS
IMO, your failure rate estimate does not include
On 6/26/2012 7:57 PM, li...@lazygranch.com wrote:
If the GPS is jammed, the UAV goes into a failsafe mode.
If the GPS _knows_ it has been jammed, the UAV goes into a failsafe mode.
There, fixed that for you.
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On Tue, Jun 26, 2012 at 3:59 PM, Jim Lux jim...@earthlink.net wrote:
I did some calculations last year, and if Los Angeles decided to put up a
UAV 24/7 to replace things like helicopters, we could expect a crash into
the city about once a week.
But they could be made very safe for only a
measurement
time-nuts@febo.com
Subject: Re: [time-nuts] Spoofing GPS
On 6/26/2012 7:57 PM, li...@lazygranch.com wrote:
If the GPS is jammed, the UAV goes into a failsafe mode.
If the GPS _knows_ it has been jammed, the UAV goes into a failsafe mode.
There, fixed that for you
for the latest technology...
Dave
-Original Message-
From: time-nuts-boun...@febo.com
[mailto:time-nuts-boun...@febo.com] On Behalf Of Jim Lux
Sent: Tuesday, June 26, 2012 15:59
To: time-nuts@febo.com
Subject: Re: [time-nuts] Spoofing GPS
On 6/26/12 3:38 PM, J. Forster wrote
On 6/26/2012 9:53 PM, li...@lazygranch.com wrote:
I have been around military jamming. The GPS goes to zilch. It isn't
a soft degradation.
Whoosh. The (off-topic) discussion is about civilian GPS, as used by
civilian drones. I take it you didn't read the linked article from the
OP, which
On 6/26/12 4:42 PM, J. Forster wrote:
IMO, your failure rate estimate does not include the probability that some
people might not like being spied on by UAVs.
I can easily see a market for ground based GPS jammers, especially, in the
more rugged, fertile, and inaccessible areas of California.
On 6/26/12 5:51 PM, Chris Albertson wrote:
On Tue, Jun 26, 2012 at 3:59 PM, Jim Luxjim...@earthlink.net wrote:
I did some calculations last year, and if Los Angeles decided to put up a
UAV 24/7 to replace things like helicopters, we could expect a crash into
the city about once a week.
The smaller path loss from the ground to a UAV v. UAV to satellite easily
trumps the front/back ratio of most all antennas.
-John
=
On 6/26/12 4:42 PM, J. Forster wrote:
IMO, your failure rate estimate does not include the probability that
some
people might not like being
Mount a GPS antenna on the bottom of the UAV. If you get strong signals
from that antenna, assume information assurance has failed.
There are countermeasures, and of course counter-counter-measures.
Here is a photo of a predator spying on me:
http://www.kentuckynewsnetwork.com/cc-common/news/sections/newsarticle.html?feed=104668article=10225815
-John
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and frequency measurement
Subject: [time-nuts] Spoofing GPS
Sent: Jun 25, 2012 6:39 PM
http://www.kentuckynewsnetwork.com/cc-common/news/sections/newsarticle.html?feed=104668article=10225815
-John
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To: time-nuts@febo.com
ReplyTo: j...@quikus.com
ReplyTo: Discussion of precise time and frequency measurement
Subject: [time-nuts] Spoofing GPS
Sent: Jun 25, 2012 6:39 PM
http://www.kentuckynewsnetwork.com/cc-common/news/sections/newsarticle.html?feed=104668article
Too little, too late. Iran proved they could get through their supposedly
encrypted system (yeah, right, encrypted).
Civil air patrol uses volunteers to fly border missions for under $100 an hour,
which is far cheaper than those drones. But it doesn't make the drone
manufacturers any money.
The USAF rediscovered manned aircraft for surveillance lately such as the
U-28 or the civilian version (PC-12). They don't attract as much attention.
Also the MC-12, which is just a Beechcraft. The FBI flies Cessnas. There is a
lot to be said for hiding in plain sight.
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