基于FPGA的快速中频自动增益控制系统  

Fast IF Automatic Gain Control System Based on FPGA

作　　者：张春杰[1] 谭振伟[1] 李娜[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：《控制工程》2013年第5期966-969,共4页Control Engineering of China

基　　金：中央高校基本科研业务费专项基金(HEUCFZ1215)

摘　　要：为了同时满足系统的动态范围和响应时间的需要,提出了一种基于FPGA的快速中频自动增益控制(AGC)系统。首先进行了计算机仿真,利用Quartus II对系统AGC算法进行了仿真,验证了系统搭建控制模块、达到了60 dB的动态范围控制。通过逻辑仿真软件的验证和硬件电路的测试,证明系统响应迅速,控制精度高,并且系统用在实际的雷达接收机中取得了良好的结果,增大了接收机的动态范围,提高了雷达系统的性能。In order to meet the needs of the system dynamic range and response time, this paper proposed a FPGA - based rapid IF au- tomatic gain control （AGC） system. First, computer simulation is carryed out using Quartus II simulation to verify the timing and logic functions of the system algorithm. And then the design and implementation of the system hardware are completed. Finally, the paper re- alizes a control module inside the FPGA, up to 60 dB of dynamic range control. The validation of the logic simulation software and tes- ting of the hardware circuit proved that the response of the system is fast and has high control accuracy, and systems have achieved bet- ter results in the actual radar receiver, and the proposed method increases the dynamic range of the receiver to improve the performance of the radar system.

关 键 词：AGC FPGA 动态范围 响应时间 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]