Resonant Sensor for Obstacle Detection in Fresh Water

This paper presents a new underwater environment and obstacle detection device using a resonant sensor operating in the frequency range from 50 to 180MHz. The sensor design does not require a complex manufacturing process. The sensor electronic is fairly simple and low power. Simulation results and practical measurement in a controlled environment validate the additional work on this novel tool, which is a low-power sensor based on a resonant antenna that is able to detect rock walls and air pockets with a detection range of 300–400 mm.