基于全息技术的近程目标毫米波散射特性研究  

Research on Short-Range Target Millimeter Wave Scattering Characteristics Based Holographic Technique

作　　者：朱莉[1] 李兴国[1] 王本庆[1] 

机构地区：[1]南京理工大学电光学院探测与控制工程系,南京210094

出　　处：《宇航学报》2011年第11期2457-2462,共6页Journal of Astronautics

基　　金：国家自然科学基金资助(61001010)

摘　　要：针对近程条件下由于目标各散射点回波的干涉而产生"角闪烁"效应的问题,首次提出采用全息技术研究近程目标的毫米波散射特性。该方法利用相位干涉效应,补偿电磁波的波前球面弯曲,并通过对回波信号的数学建模,反演目标的散射场分布函数。给出了四类不同特征的目标进行近程RCS预测,预测结果与目标特性相一致,表明该方法切实有效。For the ＂ glint＂ effect caused by interference of target scatters echo under the near-range condition, a holographic technique is introduced to study near-range target millimeter wave scattering characteristics. Phase interference effect is used to compensate the spherical wave front of electromagnetic wave. The mathematical model about near-range target scattering signal is established, and distributed function of target scattering field is inversed. Near-range RCS of four different characteristic targets are predicted. The experimental results are in consistent with the target characteristics, and the method is proved to be effective.

关 键 词：毫米波 散射特性 近程探测 全息技术 

分 类 号：TN965.2[电子电信—信号与信息处理]