基于合成带宽技术提高距离分辨率的新方法  

New method for increasing the range resolution based on synthesized bandwidth technique

作　　者：彭岁阳[1] 卢大威[1] 张军[1] 沈振康[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院ATR实验室,湖南长沙410073

出　　处：《系统工程与电子技术》2010年第2期235-238,共4页Systems Engineering and Electronics

基　　金：国防预研基金(9140A01060307KG01)资助课题

摘　　要：多频段子脉冲信号合成距离像,可以降低系统瞬时带宽和采样率要求,并提高距离分辨率。探讨了一种新的基于合成带宽技术的综合子脉冲成像思想,该方法用非均匀采样模型来解决频带合成中子脉冲参数不同带来的问题,然后采用辛格插值方法进行信号的均匀化重建,并最终获取更高分辨率距离像。仿真实验表明,此方法不仅能解决不同参数的子脉冲信号间合成问题,还有效改善了距离分辨率。The method for synthesizing range profile by multi-band child pulse signals can reduce the instantaneous bandwidth and sample rate requirements of radar systems,and increase the range resolution.A new method of pulse-integrated imaging based on the synthesized bandwidth technique is discussed.The non-uniform sampling model is adopted to resolve the problems that are caused by child pulse signals＇ different parameters in the synthesis band,then the signal is reconstructed by the SINC interpolation,and higher resolution range profile is gotten at last.The simulation shows that the method not only resolves the synthetic problem of child pulse signals with different parameters,but also improves the range resolution.

关 键 词：合成带宽 距离分辨率 非均匀采样 辛格插值 

分 类 号：TN957.52[电子电信—信号与信息处理]