数字AGC技术在跟踪雷达上的应用  

Application of Digital AGC Technology to Tracking Radar

作　　者：张松柏[1] 李红虎[1] 

机构地区：[1]船舶重工集团公司723所,扬州225001

出　　处：《舰船电子对抗》2014年第1期53-56,共4页Shipboard Electronic Countermeasure

摘　　要：阐述了一种跟踪雷达数字自动增益控制(DAGC)的实现方法,直接对中频放大器的输出进行采样处理并获取AGC样本数据,运用自适应AGC算法产生作用于中频数控衰减器的增益控制码,使得中频放大器输出的信号幅度迅速稳定到某个合适的范围内。由于采用纯数字处理方式,所以具有收敛速度快、灵活性强、精度高、稳定性好等优势。A method to realize digital automatic gain control （DAGC） of tracking radar is expatiated in this paper ,the output signal of intermediate frequency （IF ） amplifier is directly sampled and processed ,and the AGC swatch data are obtained ,adaptive AGC algorithm is applied to generate gain code to control IF digital control attenuator ,w hich makes the amplitude of signal from IF am-plifier stabilize to a suited range quickly .Because the full digital processing mode is adopted ,this method has the merits of convergence rate ,flexibility ,accuracy ,stability and so on .

关 键 词：数字自动增益控制 数控衰减器 自适应AGC算法 纯数字处理方式 

分 类 号：TN959.6[电子电信—信号与信息处理]