I built a mmWave material classification radar (2025)
gauthier-lechevalier.com
I built a mmWave material classification radar (2025)
1–10 of 61 posts
Re: I built a mmWave material classification radar (2025)
#2That's awesome. I built one for a capstone back in the day and know how tough it is to get onboarded. Kudos.
Re: I built a mmWave material classification radar (2025)
#3Very cool! Six years ago I worked on a mmWave (76-81GHz) imaging radar with a Rotman lens Tx and Rx. Designed as a LiDAR replacement, but we could see pipes in walls, or detect concealed weapons at ~1km.
Re: I built a mmWave material classification radar (2025)
#4Very cool! Six years ago I worked on a mmWave (76-81GHz) imaging radar with a Rotman lens Tx and Rx. Designed as a LiDAR replacement, but we could see pipes in walls, or detect concealed weapons at ~1km.
How many tx and rx antennas did you have ? (I don’t know if it was clear, my stack was 57-64 GHz, 2TX , 3RX)
Re: I built a mmWave material classification radar (2025)
#5So thankful the author posted this. We often learn more from failure than success. Learning from the failures of others is how we can move forward.
The lessons learned at the bottom of the article are gold.
Re: I built a mmWave material classification radar (2025)
#6Terrific project!
Re: I built a mmWave material classification radar (2025)
#7Very cool! Six years ago I worked on a mmWave (76-81GHz) imaging radar with a Rotman lens Tx and Rx. Designed as a LiDAR replacement, but we could see pipes in walls, or detect concealed weapons at ~1km.
How many tx and rx antennas did you have ? (I don’t know if it was clear, my stack was 57-64 GHz, 2TX , 3RX)
32 port Tx (vertical pancake beams) x 16 port Rx (horizontal pancake), something like 60 by 30 degrees. the entire thing used FPGA transceivers as one-bit DAC/ADC, Complementary Golay Code waveforms with one-bit correlation in the FPGAs (two VCU128s) -- digital logic was essentially the same as a binarized neural network, I squeezed a ton of popcnt performance out of those chips using both DSPs and LUTs
Re: I built a mmWave material classification radar (2025)
#8Very cool! Six years ago I worked on a mmWave (76-81GHz) imaging radar with a Rotman lens Tx and Rx. Designed as a LiDAR replacement, but we could see pipes in walls, or detect concealed weapons at ~1km.
Do you have a writeup about the project? I'd love to read more about it.
Re: I built a mmWave material classification radar (2025)
#9Hugged to death but I'd love to see this!
Re: I built a mmWave material classification radar (2025)
#10My netlify crashed fixing the website rn