分布式地面多传感器探测系统中扩频通信技术的研究

【作者】 谌玉华；

【导师】 孟迎军；

【作者基本信息】 南京理工大学 ， 物理电子学， 2004， 硕士

【摘要】 本论文研究工作主要分为两部分：第一部分介绍RGS系统中信号传输的解决方案，第二部分讲述如何完成一个点对点的扩频通信小系统。 本论文首先说明为什么要使用扩频通信系统，其中介绍了扩频通信系统的特点。然后讲述了扩频通信系统的基本原理，如扩频，调制，解扩，解调，同步，PN码等。再接着阐述了点对点系统设计的大致框架，及基本的参数和指标。最后详细的分析了点对点扩频通信系统的硬件和软件设计问题，其中主要使用了Zilog公司的Z87200扩频专用芯片和AT89C51单片机。着重讲解了发射电路和和接收电路的的构成。同时给出了基带部分的电路原理图。更多还原

【Abstract】 This research work mainly includes two parts. Firstly it presents how to complete the transmission of the digital signal in the RGS. Secondly it deals with how to design a point-to-point Direct Sequence Spread Spectrum System(DS-SS).At first the dissertation tells us why the Spread Spectrum Communication System is used, in which it includes the characteristics of the Spread Spectrum Communication System. After that the fundamental of Spread Spectrum Communication System, especial for the Direct Sequence Spread Spectrum System is given, such as spread spectrum, modulation, synchronization, PN code and so on.In addition, the structure of point-to-point DS-SS and some basic parameters are given.Finally the dissertation presents the design of hardware and software of the system, where Zilog Z87200 and AT 89C51 are chosen as basic chips. Because of its flexibility and powerful function, the system is suitable for constituting a WLAN.更多还原