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Old 08-08-2019, 15:39   #1
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Iran jamming GPS signals

"According to US Central Command and the DOT Maritime Admin..."
https://amp.businessinsider.com/iran...ze-them-2019-8

Never occurred to me that jamming was possible. Glad I still do the old school ways.
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Old 08-08-2019, 15:48   #2
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Re: Iran jamming GPS signals

Quote:
Originally Posted by td0tz View Post
"According to US Central Command and the DOT Maritime Admin..."
https://amp.businessinsider.com/iran...ze-them-2019-8

Never occurred to me that jamming was possible. Glad I still do the old school ways.
Glad me & our boat aren't anywhere near Iran
Glad GPS much more accurate than old school but good to have old school knowledge alright.
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Old 08-08-2019, 16:53   #3
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Re: Iran jamming GPS signals

Quote:
Originally Posted by td0tz View Post
"According to US Central Command and the DOT Maritime Admin..."
https://amp.businessinsider.com/iran...ze-them-2019-8

Never occurred to me that jamming was possible. Glad I still do the old school ways.


Jamming is exceptionally easy, any one with even rudimentary electronics skills can build a jammer, all you need to do is overwhelm the satellite signal.
Spoofing which means make you think your somewhere your not however is much more difficult.
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Old 08-08-2019, 17:44   #4
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Re: Iran jamming GPS signals

The US can, if needed, dither the gps so incoming missiles, and ugly sailboats, will be unable to navigate using gps.
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Old 08-08-2019, 18:04   #5
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Re: Iran jamming GPS signals

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The US can, if needed, dither the gps so [...] ugly sailboats... will be unable to navigate

Heh. Selective availability, FTW.
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Old 08-08-2019, 18:58   #6
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Re: Iran jamming GPS signals

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Originally Posted by Zzmeyer View Post
The US can, if needed, dither the gps so incoming missiles, and ugly sailboats, will be unable to navigate using gps.
BeiDou (北斗) and GloNaSS (ГЛОНАСС) spiked that wagon, no?
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Old 08-08-2019, 19:04   #7
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Re: Iran jamming GPS signals

Ya, about jamming and spoofing....

With like $300 you can make a GPS think it is someplace else. Look up spoofing and SDR.

There are many different boxes that will jam a number of signals. Not too hard to take out GPS and cell for a few miles around with boxes you can buy.

The FAA was having troubles with a landing system because a guy bought a jammer and kept driving by the Newark airport shutting down some ground stations.
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Old 09-08-2019, 03:48   #8
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Re: Iran jamming GPS signals

There have been a number of cases of truckies using GPS blockers so that there employers don't know where they are - with consequent problems to others.


For instance: https://gizmodo.com/jamming-gps-sign...d-e-1796778955
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Old 09-08-2019, 04:32   #9
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Re: Iran jamming GPS signals

I went through Hampton Roads about two weeks after 911.
All of my electronics went haywire until I was well past the
Naval base. Below is what my radar looked like.
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Old 09-08-2019, 05:51   #10
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Re: Iran jamming GPS signals

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Heh. Selective availability, FTW.
Yep, remember them days. Back then, we didn't care, GPS was just so amazing.
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Old 09-08-2019, 09:44   #11
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Re: Iran jamming GPS signals

As A64 Pilot points out, this is not an isolate case. The North Koreans were doing it for a while, Iran brought down a drone by spoofing the GPS, and the MOD (Ministry of Defence) regularly puts out NOTAMs (I am not sure of the name they use) pointing out when GPS may not be available, or worse, MAY PROVIDE FALSE LOCATIONS due to military maneuvers.

There is a push by some organizations and individuals to update the LORAN system (enhanced LORAN or ELORAN) as a counter to this problem. It has also been discussed on several threads here of CF.

There is some discussion that when Iran captured two of our patrol boats a year or two ago, they spoofed the GPS to bring them off course an into Iranian waters.
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Old 09-08-2019, 09:50   #12
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Re: Iran jamming GPS signals

Note to self: stay out of the Strait of Hormuz.
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Old 09-08-2019, 10:01   #13
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Re: Iran jamming GPS signals

LORAN is just as easy to jam as GPS and likely easier to spoof.
To be relatively immune you need an Inertial nav system, hopefully tied to a digital sonar map.
Not likely for us.

Other than clouds, I think a sextent would be real tough to jam or spoof, and something we can afford.
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Old 09-08-2019, 10:06   #14
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Re: Iran jamming GPS signals

Quote:
Originally Posted by td0tz View Post
"According to US Central Command and the DOT Maritime Admin..."
https://amp.businessinsider.com/iran...ze-them-2019-8

Never occurred to me that jamming was possible. Glad I still do the old school ways.
I don’t plan on spending any of my time worrying about this.

Carry on...
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Old 09-08-2019, 10:51   #15
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Re: Iran jamming GPS signals

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Originally Posted by a64pilot View Post
Other than clouds, I think a sextent would be real tough to jam or spoof, and something we can afford.

Well, along with a compass, dead reckoning, and piloting.
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