基于运动目标信号稳健特征的频率步进雷达距离像合成方法  

Range Profile Reconstruction Method for Stepped-Frequency Radar Based on Signal Robustness of Moving Targets

作　　者：朱永锋[1] 赵宏钟[1] 付强[1] 

机构地区：[1]国防科学技术大学ATR国防科技重点实验室,湖南长沙410073

出　　处：《信号处理》2010年第10期1449-1455,共7页Journal of Signal Processing

摘　　要：频率步进雷达传统的距离像合成方法易受到运动补偿误差的影响。本文首先证明了频率步进雷达回波在脉间IFFT后具有的几种对运动补偿误差不敏感的稳健特征。然后,基于这些特征提出了一种新的距离像合成方法,该方法不仅有效克服了子距离像的多普勒循环移位对距离像合成的不利影响,而且利用脉冲包络加权估计有效提高了距离像合成精度。仿真与外场实测数据分析结果验证了本文方法的性能优势。Traditional HRRP（High Resolution Range Profile） reconstruction methods for SFR（Stepped-Frequency Radar） are sensitive to residual errors of motion compensation.However in this paper,several robust properties maintained by SFR echo after interpulse IFFT,which are insensitive to motion compensation errors,are proved firstly.Then base on these properties,a new HRRP reconstruction method is proposed,which not only eliminates the negative effect of Doppler cyclic shift of sub-HRRP on HRRP reconstruction, but also improves the accuracy of reconstruction effectively by pulse-envelop-weighting estimation.Analysis results using both simulated and field-measured data have verified the advantages of the proposed method.

关 键 词：频率步进 运动目标 距离像 多普勒 驻定相位 

分 类 号：TN957[电子电信—信号与信息处理]