As robots and automated machineries are increasingly replacing the manual operations, protecting humans who are working in collaboration with these machines is becoming an increasingly important task. Technologies such as cameras, infra-red and seismic sensors as well as radar systems are used for presence detection and localization of human beings. Among different radar sensors, Ultra Wide Band (UWB) radar has shown some advantages such as providing the distance to the object with good precision and high performance even under adverse weather and lightning conditions. In contrary to traditional radar systems which use a specific frequency and high output power, UWB Radar uses a wide frequency band (> 500 MHz) and low output power to measure the distance to the object.

The purpose of this thesis is to investigate UWB radar system for protecting humans around dangerous machinery in environments like mines where conditions like dirt, fog, and lack of light cause other technologies such as cameras to have a limited functionality. Experimental measurements are done to validate the hardware and to investigate its constraints.