模拟短波接收机的数字化及其实现  

Digitization and Implementation of the Analog Shortwave Receiver

作　　者：吕锋[1] 冯建春[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2010年第2期175-177,共3页Journal of Wuhan University of Technology：Information & Management Engineering

摘　　要：介绍了一种模拟短波接收机数字化改造的设计方案。设计中沿用模拟短波接收机接收短波信号,对其输出的中频信号进行增益控制、模数转换、分集合成、信号解调、数模转换和低通滤波等数字化处理,从而改善了短波无线通信系统的性能,提高了接收信号的信噪比。A design proposal was introduced to digitize the analog shortwave receiver.The design continued to use the original analog shortwave receiver to receive the short-wave signals and export the intermediate frequency signals.The intermediate frequency signals were treated by a serial of digital processes including gain control,analog-to-digital converting,spatial diversity synthesis,signals demodulation,digital-to-analog converting and low pass filtering.These treatments thereby improved the performance of short-wave wireless communication system,and increased signal-to-noise ratio of the received signals in the meantime.

关 键 词：短波接收机 数字化 空间分集合成 硬件电路 

分 类 号：TN851.5[电子电信—信息与通信工程]