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Re: explaining i/q
From: |
David Hagood |
Subject: |
Re: explaining i/q |
Date: |
Tue, 3 Nov 2020 19:58:16 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.3.2 |
Like I said previously:
Think of the spinning dancer illusion. It works because you only see
from one vantage point. If you saw a real doll spinning, and assuming
you have two eyes and normal binocular vision, you will have parallax,
and that will allow you to determine in reality which way the figure is
spinning, because each eye will have a different view of what is going
on, and so can work out what direction the figure is spinning in.
I/Q is like that - it allows the SDR to see have "parallax" - to have 2
points of view on the signal at the same time, and so it can "see" which
way the signal is rotating - whether the signal is spinning clockwise
(negative frequencies, cause math) or counter-clockwise (positive
frequencies).
There - no advanced math, short, and yet accurate.
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- Re: explaining i/q, (continued)
- Re: explaining i/q, David Hagood, 2020/11/02
- Re: explaining i/q, Jeff Long, 2020/11/02
- Re: explaining i/q, Aditya Arun Kumar, 2020/11/02
- Re: explaining i/q, Anon Lister, 2020/11/02
- Re: explaining i/q, gilles rubin, 2020/11/03
- Re: explaining i/q, Jeff Long, 2020/11/03
- Re: explaining i/q, Kristoff, 2020/11/03
- Re: explaining i/q, David Hagood, 2020/11/03
- Re: explaining i/q, Kristoff, 2020/11/03
- Re: explaining i/q,
David Hagood <=
- Re: explaining i/q, Kristoff, 2020/11/04
- Re: explaining i/q, David Hagood, 2020/11/04
- Re: explaining i/q, Fons Adriaensen, 2020/11/04
- Re: explaining i/q, david vanhorn, 2020/11/04
- Re: explaining i/q, David Hagood, 2020/11/04
- Re: explaining i/q, Fons Adriaensen, 2020/11/05
- Re: explaining i/q, Jeff Long, 2020/11/03
- Re: explaining i/q, Kristoff, 2020/11/04
- Re: explaining i/q, Christophe Seguinot, 2020/11/04
- Re: explaining i/q, Don Wade, 2020/11/04