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Looking for a way to plot V_LSR vs intensity in GNU Radio

From: Ellie White
Subject: Looking for a way to plot V_LSR vs intensity in GNU Radio
Date: Fri, 24 Jul 2020 11:09:41 -0400

Hey all! 

Hope you're doing well and having a good summer. I apologize for cross-posting here, but I wanted to pass this question by members of both the SARA and GNU Radio communities to see what resources are out there. This summer I'm working as an intern for Berkeley SETI Research Center and I'm helping integrate the Allen Array with GNU Radio. I've been collecting data with a USRP on site and I'm now attempting to plot it. 

My question is this: do any of you know of a method -- or a GNU Radio module -- compatible with GR version 3.8 that allows you to plot raw data from a USRP and get a plot of intensity versus velocity with respect to the local standard of rest (V_LSR) -- instead of intensity versus frequency, as given by the time sink block? 

Thanks so much for considering this, and for any ideas you have to share! Have a nice day and take care.


Ellie White
Co-Director, Open Source Radio Telescopes
Student at Marshall University

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