Performance Comparison of Signal Coding Method in Acoustic Sensing for Occlusion Area Using Super-directional Sound Source

For sensing technology, various kinds of signals such as light, radio waves, sound waves, and lasers are used. In this study, we focused on acoustic sensing in Air and tried to detect an object existing in occlusion area that cannot be detected by visible light (i.e., hidden behind other objects). In this study, we pay attention to diffraction phenomena of sound waves with a long wavelength. We compare and evaluate the signal coding method for object detection in occlusion area.