SDR with HackRF One (Lesson 6: Complex Numbers)

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Lesson 6 Overview

  • Negative numbers
  • Complex numbers
  • The complex plane
  • Complex arithmetic
  • Complex exponentials
  • Tau
  • Rectangular coordinates and polar coordinates
  • Complex number terminology
  • Quadrature terminology

In order to clearly see my screen during the demonstration, viewing the video in full screen mode may help. Even better – you can download this video in high resolution (720p). (torrent)

Homework

  1. A weather station measures wind direction once per minute. Write a program to indicate the average direction over a five minute period. Try it on the following sets of readings:
    • 12°, 15°, 13°, 9°, 16°
    • 358°, 1°, 359°, 355°, 2°
    • 210°, 290°, 10°, 90°, 170°
  2. Modify your program to handle wind speed input in addition to direction.

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