Learn to build an RFID based attendance system using Arduino with step-by-step instructions, circuit diagrams, and complete code. This $35 DIY project replaces expensive commercial systems with ...

With the acceleration of urbanization, Through-Wall Radar (TWR) technology has become crucial for military reconnaissance and disaster emergency response. However, conventional TWR systems ...

Contribute to imsayanbhattacharjee/SONAR-Based-Radar-System-using-Arduino-uno development by creating an account on GitHub.

Soldiers, assigned to 10th Mountain Division, complete a training and validation exercise on the AN/TPQ-53 radar system in Sierra Vista, Ariz., March 12, 2025. Army photo by Sgt. Chase Murray.

This study proposes a radar-based heartbeat measurement method that uses the absolute value of the second derivative of the complex radar signal, rather than its phase, in combination with the ...