Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 30-07-2013, 15:09   #1
Senior Cruiser
 
rebel heart's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Posts: 6,190
Images: 3
Dust Off Your Sextants! GPS Hacked!

False GPS signals allow Texas university students to take control of ship | News.com.au

Quote:
A group of University of Texas students has demonstrated how easy such electronic "spoofing" is by taking control of an $80m yacht with permission, of course.

Professor Todd Humpreys from the department of aerospace engineering and engineering mechanics led the team which created a false GPS signal generator which was able to override the ships navigation computers as it travelled from Monaco to Rhodes in the Mediterranean.
__________________

__________________
rebel heart is offline   Reply With Quote
Old 30-07-2013, 15:50   #2
Registered User

Join Date: May 2009
Location: Vancouver, Wash.
Boat: no longer on my Cabo Rico 38 Sanderling
Posts: 1,794
Send a message via MSN to John A
Re: Dust Off Your Sextants! GPS Hacked!

Keep track of your position on a paper chart. And, maybe, look where you're going.
__________________

__________________
John A is offline   Reply With Quote
Old 30-07-2013, 16:59   #3
Registered User
 
Andrew B.'s Avatar

Join Date: Mar 2013
Posts: 347
Re: Dust Off Your Sextants! GPS Hacked!

The report I heard just last week on the radio news stated that they had the $20 million yacht going anywhere they wanted it to for over a hundred miles without anyone on the yacht ever knowing they were being taken off course. I did a little research earlier today, and found a article posted by Homeland Security from 2003, so they know about it. One has to wonder if is being remedied ?
Apparently the military side of the GPS satellites is encrypted, and they haven't spoofed it, at least not yet.

Spoofed the yacht with a laptop, and $3000 of gear if I recall correctly.

here, http://www.ne.anl.gov/capabilities/vat/spoof.html
then scroll down to GPS Spoofing Countermeasures, under Related Docs.
__________________
Andrew B. is offline   Reply With Quote
Old 30-07-2013, 17:47   #4
Registered User
 
nimblemotors's Avatar

Join Date: Apr 2011
Location: Sacramento, California
Boat: Solar 40ft Cat :)
Posts: 1,557
Re: Dust Off Your Sextants! GPS Hacked!

So the drones don't use the military GPS units?

I would expect it to be pretty easy to find the location of a fake GPS transmitter,
it must keep transmitting to be effective. The penalty for such fake transmissions might be severe, like having to live in NZ.
__________________
JackB
MiniMPPT Solar Controller
nimblemotors is offline   Reply With Quote
Old 30-07-2013, 18:11   #5
Senior Cruiser
 
Therapy's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: W Florida
Boat: The Jon boat still, plus a 2007 SeaCat.
Posts: 6,894
Images: 4
Re: Dust Off Your Sextants! GPS Hacked!

Quote:
"We've got to put on our thinking caps and see what we can do to solve this threat quickly," Professor Humpreys said.
Of course we couldn't have a swift trial followed by a hanging. (not this one done with permission of course) Not in today's PC climate anyway.
__________________
Who knows what is next.
Therapy is offline   Reply With Quote
Old 30-07-2013, 18:25   #6
Registered User
 
brankin's Avatar

Join Date: Jul 2010
Location: Florida
Boat: Endeavour 43
Posts: 232
Re: Dust Off Your Sextants! GPS Hacked!

Now this will give "Wreckers" a new business model
__________________
brankin is offline   Reply With Quote
Old 30-07-2013, 18:32   #7
Registered User
 
nimblemotors's Avatar

Join Date: Apr 2011
Location: Sacramento, California
Boat: Solar 40ft Cat :)
Posts: 1,557
Re: Dust Off Your Sextants! GPS Hacked!

can give you an excuse in court..the GPS was faked, that is why my missle went to the wrong address, or my boat ran into yours, or my car crashed into the supermarket, or my boat went to NZ.
__________________
JackB
MiniMPPT Solar Controller
nimblemotors is offline   Reply With Quote
Old 30-07-2013, 18:42   #8
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,363
Re: Dust Off Your Sextants! GPS Hacked!

another vote for not tying your Ap to anything else.....
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 30-07-2013, 18:53   #9
Senior Cruiser
 
Captain Bill's Avatar

Cruisers Forum Supporter

Join Date: Apr 2008
Location: On the boat
Boat: Endeavourcat Sailcat 44
Posts: 2,313
Re: Dust Off Your Sextants! GPS Hacked!

There's nothing new here. It's been well known for a long time that GPS signals can be spoofed. Since the frequencies are line of site only the spoofer has to be fairly close. The military can spoof you too. I used to keep my boat near Oriental NC. One day while still tied to the dock in beautiful downtown Whortonsville, my GPS suddenly put me up in the Bay River, about 10 miles from my actual position. I heard an airplane going over at the time and looked up and saw a marine corp EA-6b electronics warfare aircraft heading for Cherry Pt. MCAS. When it went over the horizon my boat returned to the dock. I guess it's good I wasn't in track mode on my autopilot.
__________________
Captain Bill is offline   Reply With Quote
Old 30-07-2013, 18:55   #10
Registered User

Join Date: Mar 2013
Location: Australia
Boat: 21 ft sail boat
Posts: 347
Re: Dust Off Your Sextants! GPS Hacked!

Now I know how my wife has been able to control me all these years.
__________________
Adventurebound is offline   Reply With Quote
Old 30-07-2013, 19:08   #11
Registered User

Join Date: May 2013
Boat: Golden Gate 30
Posts: 80
Re: Dust Off Your Sextants! GPS Hacked!

You are more likely to have a problem from not being able to acquire the necessary number of satellites than this happening.

On a similar note, do marine GPS units not provide RAIM?
__________________
Adodero is offline   Reply With Quote
Old 30-07-2013, 20:18   #12
Registered User

Join Date: May 2009
Location: Vancouver, Wash.
Boat: no longer on my Cabo Rico 38 Sanderling
Posts: 1,794
Send a message via MSN to John A
Re: Dust Off Your Sextants! GPS Hacked!

What's RAIM??
__________________
John A is offline   Reply With Quote
Old 30-07-2013, 20:25   #13
Registered User

Join Date: Apr 2012
Location: Vancouver, BC
Boat: Alberg 30
Posts: 344
Quote:
Originally Posted by Cheechako View Post
another vote for not tying your Ap to anything else.....
It needs gps and heading data from a compass to move the rudder to maintain direction of travel I'm pretty sure.
__________________
jgbrown is offline   Reply With Quote
Old 30-07-2013, 20:54   #14
Registered User

Join Date: May 2009
Location: Vancouver, Wash.
Boat: no longer on my Cabo Rico 38 Sanderling
Posts: 1,794
Send a message via MSN to John A
Re: Dust Off Your Sextants! GPS Hacked!

Quote:
Originally Posted by jgbrown View Post
It needs gps and heading data from a compass to move the rudder to maintain direction of travel I'm pretty sure.
An autopilot can steer to a compass direction manually entered in the AP's control unit

You can even manually alter the compass course to steer a different direction from the compass direction you entered.

You can even turn the AP off and manually steer to the course indicated on the gps.

You can even turn both the gps and the AP units off and steer to the wind.
__________________
John A is offline   Reply With Quote
Old 30-07-2013, 21:33   #15
Senior Cruiser
 
rebel heart's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Posts: 6,190
Images: 3
Re: Dust Off Your Sextants! GPS Hacked!

Quote:
Originally Posted by jgbrown View Post
It needs gps and heading data from a compass to move the rudder to maintain direction of travel I'm pretty sure.
My windvane steers to the wind and my autopilot just steers to a compass heading, via a magnetic compass sensor.

I think the odds of someone screwing with GPS is pretty slim but if there are guys shining lasers into airplane cockpits I could see GPS hacking not being too far from reality.
__________________

__________________
rebel heart is offline   Reply With Quote
Reply

Tags
gps, sextant

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:16.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.