基于VXI总线的电离层探测系统信号源的设计  

Design of the Signal Source Module for Ionospheric Oblique Backscattering Sounding System Based on VXIbus

作　　者：姚惟琳[1] 赵正予[1] 陈曦[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072

出　　处：《武汉大学学报（理学版）》2005年第1期100-104,共5页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金资助项目 (40474066)

摘　　要：根据新型电离层斜向返回探测系统的编码调相脉冲压缩、间隔收发体制,采用 FPGA和数字上变频器实现了一种适合该体制的、基于VXI总线的信号源模块.具体描述了该模块的设计方法、主要逻辑和时序关系.试验表明,该模块运行可靠,工作方式和参数调整灵活,实现了符合体制要求的射频信号和时序控制信号,满足了新型电离层斜向返回探测系统抗干扰、开放性和易升级的要求.According to ionospheric oblique backscattering sounding system’s characteristics, the paper designed the signal source module which based on VXIbus and realized it with FPGA and Digital UpConverter. It described the realization method and main logic in detail. The module has the advantages of opening, versatility and upgrade, and can adjust the sounding parameters flexibly for different sounding purpose. The module has been verified in practice and can satisfy the requirements of the system.

关 键 词：电离层斜向返回探测系统 VXI总线 FPGA 数字上变频器 信号源 

分 类 号：TN958.3[电子电信—信号与信息处理]