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From: | Geof Nieboer |
Subject: | [Discuss-gnuradio] Compare Phase block |
Date: | Fri, 4 Apr 2008 22:33:41 +0900 |
All,
New to gnuradio, got it built under CygWin, receiving assorted channels, life is good.
What I want to do to start of is receive a VOR and determine it’s direction. That’s done by comparing the phase of 2 30 Hz signals which are encoded. I can demodulate both signals, but I’m not sure how to take the 2 signals and compare the phase of them. Has someone already built a block that can do that? I looked but didn’t find one. I just want to stream both signals in, and get a degree or radian output that tells me the relative phase between the two signals, which will be the radial off the VOR.
If a block hasn’t already been built for relative phase, does anyone know a mathematical solution to compare phase? I could find the peak value for the sine wave for each signal and compare the time value for each peak, but I’m wondering if there isn’t a better book answer.
Thanks!
Geof
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