Hello,
I want to measure the phase difference between three synchronised USRP
channels (Common Ref PPS), does software exist to do this, and to what
accuracy, please?
Sorry, this is a bit of a newbie question, and probably already covered!
Dave
___
Hi David,
for starters, you could just divide one channel by the other and
calculate the result's argument. There are blocks for both operations :)
Short explanation:
Just consider the complex signals $s_1, s_2$ in polar coordinates
(instead of the usual real/imag representation)
$s_1(t) =
On 17.06.2014 19:06, David Miller wrote:
Hello,
I want to measure the phase difference between three synchronised USRP
channels (Common Ref PPS), does software exist to do this, and to what
accuracy, please?
Sorry, this is a bit of a newbie question, and probably already covered!
Sure, the
I did an experiment similar to this a year or so ago. I synced all the
USRPs to the same 10MHz and PPS. I had pretty good results using libgps to
get the GPS time and then using UHD to start streaming on a particular PPS
edge on all units. With LFRX boards this will ensure that the DDCs start at
