[time-nuts] Jamming GPS

Robert Atkinson robert8rpi at yahoo.co.uk
Mon Nov 16 21:31:43 UTC 2009


Bit older but an interesting Thesis on jamming.
http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA361736&Location=U2&doc=GetTRDoc.pdf
or google "Analysis of Radio Frequency Interference Effects on a Modern Coarse Acquisition Code Global Positioning System"
 
Robert G8RPI.

--- On Mon, 16/11/09, John Green <wpxs472 at gmail.com> wrote:


From: John Green <wpxs472 at gmail.com>
Subject: [time-nuts] Jamming GPS
To: time-nuts at febo.com
Date: Monday, 16 November, 2009, 15:17


All the discussion regarding jamming GPS has been very interesting. Because
it is spread spectrum, I always assumed it would be difficult to jam GPS.
The Monterey Bay incident indicates that it is extremely easy to jam GPS.
So, as soon as another project is out of the way, I intend to do some
experiments, more of a practical than scientific nature. I have a Z3801 and
Tbolt to start with. I would also like to experiment with a hand held and a
GPS enabled cellphone. To prevent unintended interference, signal levels
will have to be carefully controlled and transmission time will have to be
kept short. I want to try CW as well as modulations of varying types. Any
suggestions as to the most effective modulation type to try?
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