侦察模式下星载合成孔径雷达工作模式鉴别  

Identification of the Spaceborne SAR Operating Modes under Reconnaissance Mode

作　　者：夏周越 钟华[1] 陈维[1] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2017年第4期36-40,共5页Journal of Hangzhou Dianzi University：Natural Sciences

摘　　要：星载合成孔径雷达SAR技术在侦察领域中的广泛应用推动了星载SAR干扰技术的快速发展,SAR侦察技术正是SAR干扰的关键环节.在星载SAR常用工作模式的基础上,基于SAR信号地基侦察模型,进行了信号侦察与模式鉴别的研究.从截获的星载SAR信号入手,提出了基于分数阶傅立叶变换与最小熵估计的处理算法,通过有效估计得到星载SAR的方位向接收功率图,从而鉴别星载SAR的工作模式.仿真实验验证了算法的有效性与可靠性.Spaceborne synthetic aperture radar（SAR） technology has been widely used in the field of reconnaissance, which has promoted the rapid development of the spaceborne SAR jamming technology, and the SAR reconnaissance technology is the key of SAR interference. In this paper, on the basis of the common operating mode of SAR, the signal detection and pattern identification are carried out based on the SAR signal ground detection model. From intercepted spaceborne SAR signal, this paper introduces the processing algorithm based on fractional Fourier transform and the minimum entropy to estimate the effective estimation of the Spaceborne SAR power, and to identify the operation mode of SAR. The simulation results verify the validity and reliability of the algorithm.

关 键 词：雷达侦察 工作模式 分数阶傅立叶变换 最小熵估计 

分 类 号：TN958.4[电子电信—信号与信息处理]