L波段宽动态范围信号检测与处理  

Detection and Processing of Wide Dynamic Range Signal in L-Band

作　　者：郑浩东 韩璐阳 孙志国[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《自动化技术与应用》2017年第1期63-66,共4页Techniques of Automation and Applications

基　　金：中央高校基本科研业务费专项资金资助(编号HEUCF150803)

摘　　要：为了避免移动通信中多普勒效应的影响,经由天线接收到的电磁波动态范围将越来越宽。为使现有变频器能够接收传输的射频信号,需在射频接收机前端对宽动态范围信号进行检测与处理,满足变频器接收信号进行频率搬移的要求。本文在现有接收机基于模拟信号进行处理的基础上,采用数字化控制的方法 ,缩小信号的动态范围,防止动态范围过宽的信号将变频器阻塞。实现了一个能够自动调整增益的反馈控制系统并采用硬件电路实现,在此基础上编制处理分析软件程序,进行测试。结果达到预期自动调整至相应动态范围目标要求。In order to avoid the influence of the Doppler effect in mobile communication, the dynamic range of the electromagnetic waves received by the antenna becomes wider and wider. To make the existed frequency converter be able to receive the transmitted RF signal and achieve the purpose of the spectrum move, the RF receiver front-end needs the wide dynamic range signal detection and processing. Based on the existing foundation of the receiver analog signal processing, the digital processing method is used to reduce the dynamic range of the signal and prevent the frequency converter from blocking caused by the wide dynamic range signal. And then a feedback control system which can automatically adjust the gain is designed. and the design gives out the hardware implementation. In the design, some processing and analysis software programs are prepared and taken into debugging in the hardware circuits. Finally, the results achieve the expected target that the wide dynamic range is automatically adjusted to an appropriate dynamic range.

关 键 词：动态范围 射频 检测处理 硬件实现 

分 类 号：TN914.1[电子电信—通信与信息系统]