Thong-un, Natee, and Wongsakorn Wongsaroj. “A Novel Ultrasonic Method for Measuring the Position and Velocity of Moving Objects in 3D Space”. Advances in Technology Innovation 7, no. 2 (March 14, 2022): 77–91. Accessed March 28, 2024. https://ojs.imeti.org/index.php/AITI/article/view/9396.