Pattern analysis for human intrusion detection with Leaky Coaxial Cables

This paper presents a pattern analysis technique for human intrusion detection with a pair of Leaky Coaxial Cables (LCX). The LCXs are placed on the ground along the border of the site. When an object crosses the LCXs, the microwave radiated from the transmitting LCX is fluctuated. The sensor unit connecting the receiving LCX catches the fluctuating signals, then pattern analysis using the in-phase and the quadrature phase (I/Q) signals is utilized to recognize human intrusion. Our new approach uses two types of signals emitted from the LCXs, the radiation mode signal and the surface mode signal. Two types of I/Q patterns are obtained simultaneously. This double pattern analysis successfully reduces many of the false alarms compared with former approaches.