FMCW
radars – Frequency Modulated Continuous Wave Radars
A big, fancy name for a distance sensor. Yes, it is a sensor. And it
works in the 77-81 GHz range. Where? In automobiles.
Why? Collision Avoidance,
Automated Parking, etc.
It is something similar to what
bat uses, Echolocation. Ultrasounds are emitted and compared with the returning
pulses to create an image of the surroundings for the bat to navigate/hunt.
A modulated frequency is sent and
received, and the difference in frequency is used to directly determine the
distance as well as the relative speed of the object.
Your car wants to think and
drive, by itself. It wants echolocation.
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| Automotive applications for CW Radars |
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