１　引言据日本三菱电机株式会社的川濑俊树和森川丰撰文报道，他们开发了一种用于智能运输系统的车型判别传感器。智能运输系统是以解决交通事故、交通堵塞、环境污染等道路交通问题而构筑的新型交通系统。它利用最先进的信息技术，将人、道路和车辆的信息通过网络来传输。使 1 Introduction According to reports by Mitsubishi Electric Corporation Kawase Toshiki and Morikawa Fung, they have developed a vehicle type discrimination sensor for an intelligent transportation system. Intelligent transportation system is to solve the traffic accidents, traffic congestion, environmental pollution and other road traffic problems and build a new type of transportation system. It uses the most advanced information technology to transmit information about people, roads and vehicles over the Internet. Make