一、引言进入21世纪以来,全球在经济、文化方面不断取得进步。但“911”事件的发生,也警示了这个世界,还存在太多危险和恐怖因素。事实上,采用先进的技术,开发稳定可靠的安防系统,对敏感和重要区域的周界进行全范围、全天候的安全防护,关系到社会的稳定发展和人民生命财产的安全,一直受到各国的高度重 I. INTRODUCTION Since the 21st century, the world has continuously made economic and cultural progress. However, the occurrence of the “911” incident also warned the world that there are still too many dangers and terrorist factors. In fact, the development of a stable and reliable security system using advanced technologies to carry out full-scale and round-the-clock security in the perimeter of sensitive and important areas has a bearing on the stability of the society and the safety of people’s lives and properties. weight