Real-Time Automated Radar-Based Intruder Detection and Response System Using Embedded Sensing and Actuation

Abstract

The increasing need for efficient perimeter defense has led to development of automated surveillance systems, though existing solutions are costly, computationally intensive, or require constant human monitoring. Many ultrasonic or radar-based systems also suffer from limited detection accuracy and lack real-time automated response. This study proposes a low-cost, Arduino-based automated radar detection and firing system integrating an ultrasonic sensor, dual servo motors, and a relay-controlled shooter. The system continuously scans the monitored area, detects intruders in real-time, aligns the shooter via servo motors, and executes an automatic firing response. Implemented using Embedded C on Arduino, experiments demonstrate detection accuracy exceeding 95%, improving over previous ultrasonic-only systems by approximately 20%. Results confirm reliable, autonomous monitoring and rapid response, offering a practical solution for military and defense application.