超宽带正交解调接收机信号采集系统设计  

Design of signal acquisition system for ultra-wideband quadrature demodulation receiver

作　　者：焦国栋[1] 梁步阁[1] 袁乃昌[1] 

机构地区：[1]国防科技大学四院微波技术发展中心,湖南长沙410073

出　　处：《系统工程与电子技术》2005年第11期1873-1875,1956,共4页Systems Engineering and Electronics

基　　金：国家"863"高技术计划基金资助课题(2002AA835040)

摘　　要：根据超宽带信号处理及实现目标识别的需要,设计并实现了一套超宽带脉冲体制正交解调接收机信号采集系统。介绍了系统的硬件和软件设计,提出了I/Q正交解调及脉冲体制超宽带信号幅相误差校正方案,并构建了适于超宽带信号频谱分析的双谱分析模块。实际应用表明,该系统达到了实时高速稳定数据采集的要求。An ultra-wideband quadrature demodulation receiver signal acquisition system for the purpose of object recognition is designed. The design of hardware and software is presented, especially the I/Q demodulation and amnplitude and phase error-correction are introduced, and a bispectral analysis module is built. The design is tested, and the application shows that it＇s a qualified system for real-time and high-speed data acquisition.

关 键 词：超宽带 数据采集卡 I/Q解调 双谱 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]