On 8/9/14, 9:33 AM, Magnus Danielson wrote:
Jim,
On 08/09/2014 05:31 PM, Jim Lux wrote:
Clarifying my previous question..
There's no doubt that multipath exists, and how to test is fairly
straightforward, whether with multiple antennas, cables, or waving
cookie sheets around..
Ultimately, the way to find out is just to get a GPS sampler, record
some raw bits, and then run the correlator and look for the second peak
from the reflection.
Quite possible, but... outside of a chip period, the Gold-code will
relatively effectively de-correlate multi-path, so it is only within the
chip period that multi-path will affect things.
If you have a correlator process that gives you all the cross
correlation bins, it's actually easier to see multipath that is greater
than one chip away (e.g. 1 microsecond .. about 300 m, for C/A code)
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