2-Dimensional Measuring Method Using a Wide-area Surveillance Sensor with Leaky Coaxial Cables

We have developed a wide-area surveillance sensor with a pair of leaky coaxial cables (LCX). It detects targets in the surveillance area by scattering signals generated by targets whose positions are measured using propagation delay time. Such a sensor has been studied previously; however, several problems remain. The primary issue is two-dimensional sensing which in practice is desired to improve the accuracy of the boundary line of the surveillance area. In this paper, we present a fundamental beam-forming technique for LCXs and a method for measuring 2-diemensional target position using a multi-frequency measurement technique.