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From: | Marcus D. Leech |
Subject: | Re: [Discuss-gnuradio] random phase offset constantly changing with octoclock setup |
Date: | Tue, 05 Jul 2016 20:51:12 -0400 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
On 07/05/2016 08:20 PM, Pavan Yedavalli
wrote:
You're making assumptions about how your signals will combine in that RSSI circuit, and how they'll combine with other ambient signals within your frequency band. I cannot imagine that being stable. To measure the phase between two signals, you need a device that is phase sensitive (like, for example, another USRP with two inputs), and compute conjugate multiplication between them, or the phase-angle, via the complex-argument block. Or just plot the two signals on a Qt Time sync, and observe that the phase relationship is the same--that of course requires that your receiver system is internally coherent between the two channels.
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