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1引言无线通信是利用电磁波信号可以在自由空间中传播的特性进行信息交换的一种通信方式。目前应用的无线通信技术主要包括微波通信、卫星通信、无线移动通信以及无线网络通信。在建筑智能化建设中应用最广的是无线移动通信以及无线网络通信,而在其延伸领域和市场中微波通信、卫星通信也有不少的应用需求,尤其是卫星通信、遥感、遥测以及与地理信息系统的结合的应用更加丰富多彩。
1 Introduction Wireless communication is the use of electromagnetic signals can be transmitted in free space characteristics of information exchange for a communication. At present, the applied wireless communication technologies mainly include microwave communication, satellite communication, wireless mobile communication and wireless network communication. In the construction of intelligent building is the most widely used wireless mobile communications and wireless network communications, and in its areas of extension and market microwave communications, satellite communications, there are many applications, especially satellite communications, remote sensing, telemetry and geography The combination of information systems is more colorful.