基于求和增量调制器的DRFM仿真  

Simulation of DRFM Based on Σ-Δ Modulator

作　　者：郝毅[1] 蓝江桥[2] 张金林[3] 

机构地区：[1]空军雷达学院研究生管理大队,武汉430019 [2]空军雷达学院,武汉430019 [3]空军雷达学院三系,武汉430019

出　　处：《空军雷达学院学报》2012年第1期43-45,共3页Journal of Air Force Radar Academy

摘　　要：为了降低基于DRFM技术的干扰设备的寄生信号,根据寄生信号产生原理和改善寄生信号的方法,提出了一种基于求和增量调制器的信号处理方法,并使用System Generator进行了仿真.仿真结果表明,该方法能够在降低寄生信号的同时,仅少量增加数字信号的位宽,有利于节省DRFM存储信号所需的存储器件数量,提升了DRFM系统能够存储的信号的总时间长度,为PD雷达目标模拟器的设计提供了依据.To reduce the spurious signal of jamming equipment based on the technique of digital radio frequency memory（DRFM）,this paper puts forward a signal processing method in terms of a Σ-Δ modulator,on the basis of the principles of the spurious signal generation and the way for its improvement,and then performs the corresponding simulations using the System Generator.Simulation results show that using the proposed method can only increase the bit width a little while reducing the spurious signal,which can facilitate to save the number of memory devices for DRFM signal storage,boost the overall time length for DRFM system saving the signal,offering the basis for the design of PD radar target simulators.

关 键 词：求和增量调制器 寄生信号 数字射频存储技术 CIC滤波器 

分 类 号：TN79[电子电信—电路与系统]