In order to build something similar to a speed radar, I've been searching for the right sensor.
I've found specific devices that match my requirements (e.g. Houston Radar products, etc) but they're quite expensive (around $500) for a hobby project !
So I was thinking of using the much cheaper X-Band radar sensor instead. However, the documentation states that:
In contrast to speed guns, which use a wave guide to direct the antenna radiation pattern, the X-BandThe "wide radiation pattern" might be problematic in my case. Is there a way I could make it "narrower"?
Motion Detector’s antenna has a wide radiation pattern to convert velocities from multiple points to
oscillations that notify the microcontroller that movement was detected. This device is designed to detect
motion, not to determine speed of a moving object. However, an application may still use a rearranged
version of the Fd equation to determine speed provided everything else in the detection area stays still.
As for the equation, what kind of "rearrangement" would it require to accurately calculate the speed of a moving object?
Thanks for your help!