【作者】 刘苗；

【导师】 王友仁；

【作者基本信息】 南京航空航天大学 ， 电力电子与电力传动， 2004， 硕士

【摘要】 本课题研究飞机电力线载波数据通信调制解调技术，本课题的研究对推动我国航空装备现代化具有实用价值。 本文介绍了飞机电力线载波数据通信系统的结构，并对低压电力线的信道特性进行了分析；对QPSK调制算法及均方根升余弦低通滤波算法进行了详细论证；设计出基于QPSK的调制解调模块，并在此基础上，研制出以DSP和CPLD为最小系统的调制解调硬件电路板，开发了调制解调模块电路板的应用软件程序。 经过调试，调制解调硬件电路板满足设计的要求。更多还原

【Abstract】 In the dissertation, MODEM technology of the airborne electromechanical communication system based on PLC is studied and the research has pratical value to improve the modernization of aeronautic equipments in our country.Firstly, the airborne electromechanical system,the development of bus protocol, power line channel and power system are described in the dissertation; secondly, the algorithm of QPSK and Root Raised Cosin are discussed ;thirdly, the designation of the hardware and software of the MODEM board ,based on QPSK, built up with DSP and CPLD are given.The high-speed data transporting card of airborne electromechanical communication system, which is based on PLC, are put forward in our country.更多还原