While it’s not radar, subbing in ultrasonic ... detection project, with some slight modifications to tap into the received audio signal rather than just using the digital output of the sensor.

As a 3D ultrasonic sensor, Sonair works very differently, enabling it to provide safe, fast and effective obstacle detection using fewer data ... are used to provide color images and are commonly ...

"Early detection of structural degradation is ... insulated and underwater pipelines using ultrasonic sensors. It also provides a larger range of inspection than traditional ultrasonic testing ...