一种改进的跟踪接收机中数字AGC算法  

An Improved Digital AGC Algorithm of Tracking Receiver

作　　者：黄长文[1] 朱立东[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,成都611731

出　　处：《空间电子技术》2016年第3期72-75,共4页Space Electronic Technology

摘　　要：在跟踪接收机中,如果接收机的增益保持不变,会导致信号太弱时信号丢失,而信号太强时产生阻塞。为了使跟踪接收机的增益跟随输入信号的强弱进行自动调节,利用自动增益控制(AGC)显得尤其重要。因此,文章利用指数与对数相结合的方式在传统的数字AGC算法的基础上进行改进,提出一种起控时间比较短,输出信号较好的算法。最后利用MATLAB对其进行了仿真。If the gain of the tracking receiver is kept unchanged,the signal will be lost when it is too weak,and the receiver blocked when it is too strong. In order to make the tracking receiver automatically adjust the gain according to the input signal strength,automatic gain control（ AGC） is especially important. Therefore,in this paper,a new algorithm combining indices and logarithms and on the foundation of traditional digital AGC algorithm is proposed,which can reduce the convergence time of the output signal. In the end,the performance of the new algorithm is simulated with MATLAB.

关 键 词：跟踪接收机 数字AGC MATLAB 算法 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]