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.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
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)
关键词
毫米波
散射特性
近程探测
全息技术
Millimeter wave
Scattering characteristics
Holographic technique
Near-range detection
