[time-nuts] Best reason

Sanjeev Gupta ghane0 at gmail.com
Thu Mar 29 06:19:29 UTC 2012


On Thu, Mar 29, 2012 at 08:43, Hal Murray <hmurray at megapathdsl.net> wrote:

>
> I think of GPS as a bunch of satellites broadcasting "I'm Bob, my orbit
> parameters are XXX, my clock says YYY."  If you hear 4 of those, you have 4
> equations to work out 4 unknowns.  The unknowns are your position: X, Y, Z,
> and T.
>

But, but, but, they told you the value of Y three times.  Why don't they
say: "I'm Bob, my orbit
parameters are X,Y,Z, my clock says T."  Nothing to solve :-)

And GPS jamming would work by other people calling you with: "Hi, Hal,
ignore that guy, _I_ am the genuwine Bob".

(For those who see this in a list archive many years from now: I am NOT
serious, please).

-- 
Sanjeev Gupta, the person formerly known as Bob
+65 98551208     http://www.linkedin.com/in/ghane



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