窗谱比值校正法在雷达干扰系统自校中的应用  

Application of window spectrum ratio correction method in self-calibration processing of radar jamming system

作　　者：刘能[1] 傅其祥[1] 谢晓霞[1] 王伟[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《现代电子技术》2014年第17期39-42,共4页Modern Electronics Technique

摘　　要：全极化有源假目标干扰系统,具有调制、转发任意极化形式假目标的能力,由于H,V极化通道之间幅相特性存在着不可避免的差异,降低了后续数字信号处理精度,从而影响了系统的干扰效果。针对这一问题,应用对频谱的比值校正法,解决了离散频谱的幅值和相位的精确求解问题,较好地校正了H,V极化通道之间的幅相不一致,并且在基于FPGA+DSP的数字信号处理板上实现了该方法,实验证明该方法校准效果良好,有较强的应用价值。Full polarimetric active decoy system has the ability to modulate and transmit the false targets with arbitrary po-larization forms. Because the unavoidable differences of amplitude and phase between horizontal and vertical polarization chan-nels reduce the accuracy of the following digital signal processing,and affect the jamming effect,author corrects the difference by applying the ratio correction method of frequency spectrum. The accurate solution of amplitude and phase of the discrete spec-trum was realized. The method was realized with FPGA and DSP. Experiments prove the calibration effect and strong application value of this method.

关 键 词：全极化有源假目标干扰系统 比值校正法 幅相一致性校正 FPGA+DSP 

分 类 号：TN874-34[电子电信—信息与通信工程]