Human Body Detection Using MIMO-UWB Radar Sensor Network in an Indoor Environment

Recently, UWB (ultra wide band) signal that has frequency bandwidth of 500 MHz or more is considered to be using high precision radar because of a very high resolution. The UWB is considered to have fewer influences on human being because of low transmitting power. And, MIMO (multiple-input multiple-output) radar refers to an architecture that employs multiple, spatially distributed transmitters and receivers. In this paper, sensor network made up of MIMO-UWB radar with widely separated antennas to estimate distance and to detect human being existence is studied. Detection performances are evaluated from the computer simulation by using the real propagation measurement result with the network analyzer. The positioning accuracy of the human body and the effectiveness of MIMO-UWB radar are shown.