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Old 09-01-2018, 16:58   #61
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Re: GPS hacking is here

We get all our navigation information from Baba Vanga.

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Old 11-01-2018, 01:47   #62
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Re: GPS hacking is here

Fair summary?: It can be done. It is done. Unlikely than it is being done in any broad based sense except maybe during a war. Even electronics such as GPS require attention and confirmation with other sources of similar data.

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Old 11-01-2018, 11:01   #63
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Re: GPS hacking is here

Originally Posted by Bill Seal View Post
Nuclear submarines navigate for months at a time using only inertial systems.
I seem to recall that the old "transit" satnav was emplaced by the US navy to allow missile submarines to come up to periscope depth during the hours of darkness to check on their inertial navigation derived position.

The first time I observed one being used to locate an offshore oil exploration well it required half a helicopter load of electronics and sat taking positions for about two days whilst regularly printing out a scatter plot with a fairly noisy dot matrix printer. After about two days it was assumed that the correct position was one in the middle of the scatter plot.

Now they are in mobile phones and tablets and accurate within a few metres, the wonders of modern technology.

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