IR-UWB를 활용한 물체 탐지 및 거리 측정시스템 구현

Abstract

Nowadays, people spend most of their life indoor. Therefore, the detection and ranging of people in a small range indoor surveillance are very important applications. The existing positioning systems such as Global Positioning System (GPS) and conventional Radar are limited at the indoor applications high errors. In recent years, the UWB has become a possible solution for object detection and ranging because it has many advantages such as high spatial resolution, simple transceiver, and low cost. This paper proposes the improved real time object detection and distance measurement system using IR-UWB radar. Firstly, the IR-UWB signal is applied for clutter reduction to reduce unwanted signals. After that, the Constant False Alarm Rate (CFAR) is used for detection of objects. Finally, the object distance is computed based on time of arrival (TOA). In order to evaluate the performance of proposed method, several experiments are made with a real IR-UWB test equipment. The experimental results validate that the implemented IR-UWB Object tracking system finds the moving object with tolerable ranging errors of 30cm in 6m distance.