This video goes over range estimation with FMCW radar and gives a little insight into why you might want to use it over a traditional pulsed radar.
There are many more trade-offs between the two that I don't discuss here, but this should give you a basic understanding of the technology.
I'll use this as a basis for future videos on FMCW radar. There is a ton to cover and I'm excited to dive into those animations and explanations!
Who is this for? Well, anyone interested in radar, but I did make a few assumptions about the viewer's background including a basic understanding of math and knowledge of what an electromagnetic wave is.
Some of the caveats to the information presented in this video: - Pulsed radars often transmit more complex waveforms than a simple sine wave (e.g., pulse compression) - FMCW radars often also have some "off" time between chirps - FMCW radars will many times transmit a series of chirps then combine them in post-processing into a coherent processing interval (CPI) - See the next video on velocity estimation :) - Not all power is reflected from the target but it is instead scattered in many directions
Errata: - I probably should have labeled the time shift from transmission to reception as t_{shift} and not t_{0} for clarity and parity with the upcoming video on the hardware implementation. - "Keyring" should be "keying"