Field Expedient SDR: Introduction to Software Defined Radio by Paul Clark & David Clark

Author:Paul Clark & David Clark [Clark, Paul & Clark, David]
Language: eng
Format: epub, azw3, mobi, pdf
Tags: gnuradio, Software Defined Radio
Publisher: Meadow Registry Press
Published: 2016-09-17T22:00:00+00:00

When we execute the flowgraph again, we see a Scope Plot window like this.

What we have here is roughly one period of a sinusoid, though if you’re the suspicious sort, you may want more evidence of this assertion. If we zoom out a bit, we’ll be able to see more than just the single oscillation. When we click on the ‘+’ button next to Secs/Div: our view starts to zoom out. After two clicks we can clearly see several periods of the waveform thereby assuring ourselves that we do indeed have a sinusoid. You might be wondering why I chose a sinusoidal waveform to make this tone. The answer to that is long and mathematical, so I am going to ask you to take this one on faith for now - a pure, single-frequency tone is sinusoidal in nature.

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