CAJ | 학술논문

该文研究机场复合场景SAR原始数据模拟方法，建立了机场复合场景SAR散射回波信号模型，在同一参考时间窗下对不同的目标分别进行SAR 原始回波数据生成，并通过矢量叠加得到机场复合场景的SAR原始回波数据。文中对驻泊飞机目标与机场背景、建筑物与机场背景的多径散射效应和遮挡效应进行了分析，结合各自散射特性建立了耦合散射模型和SAR原始信号模型，给出了场景SAR原始数据生成计算流程。SAR原始回波数据仿真和成像结果验证了模拟方法的正确性。
해문연구궤장복합장경SAR원시수거모의방법，건립료궤장복합장경SAR산사회파신호모형，재동일삼고시간창하대불동적목표분별진행SAR 원시회파수거생성，병통과시량첩가득도궤장복합장경적SAR원시회파수거。문중대주박비궤목표여궤장배경、건축물여궤장배경적다경산사효응화차당효응진행료분석，결합각자산사특성건립료우합산사모형화SAR원시신호모형，급출료장경SAR원시수거생성계산류정。SAR원시회파수거방진화성상결과험증료모의방법적정학성。
The method of generating the SAR raw data of complex airport scenes is studied in this paper. A formulation of the SAR raw signal model of airport scenes is given. Via generating the echoes from the background, aircrafts and buildings, respectively, the SAR raw data of the unified SAR imaging geometry is obtained from their vector additions. The multipath scattering and the shadowing between the background and different ground covers of standing airplanes and buildings are analyzed. Based on the scattering characteristics, coupling scattering models and SAR raw data models of different targets are given, respectively. A procedure is given to generate the SAR raw data of airport scenes. The SAR images from the simulated raw data demonstrate the validity of the proposed method.