Ahammad, Tanvir, and Muhammad Golam Rohman Shafi. “Enhancing Surveillance Systems With Cost-Effective Ultrasonic Radar for Object Detection and Tracking”. Jagannath University Journal of Science 11, no. 1 (October 21, 2024): 157−171. Accessed September 4, 2025. https://www.banglajol.info/index.php/JnUJSci/article/view/76700.