Greg Hennessy wrote:
On 2011-08-28, David J Taylor <[email protected]> wrote:
Don't forget the sideband
energy from these digital transmissions, and the below zero
signal-to-noise ratio of GPS.
I really doubt the signal to noise ratio of GPS is below zero.
Below unity I would believe.
It is well below 0dB.
ahh, here:
http://www.northwoodlabs.com/AN101.pdf
around -22dB
you get a "win" by correlation with the CA PR pattern (~1000 bits).
( you need better than +6dB S/N afair)
uwe
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