CAJ | 학술논문

SAR图像仿真技术是SAR图像理解与应用的重要辅助工具。该文根据SAR图像建筑物解译的需求，结合建筑物的结构特点，提出一种基于面元投影模型的SAR建筑物快速图像仿真方法。该方法通过简化射线跟踪算法加速目标模型到图像平面的几何映射过程，并提出面元投影模型降低散射面元到图像分辨单元中的插值误差。相较于传统SAR图像仿真，该方法实现了仿真精度与速度间的平衡。实验结果表明，该文方法能够快速生成仿真结果，仿真图像与真实图像匹配度高，具有较强的实用价值。
SAR도상방진기술시SAR도상리해여응용적중요보조공구。해문근거SAR도상건축물해역적수구，결합건축물적결구특점，제출일충기우면원투영모형적SAR건축물쾌속도상방진방법。해방법통과간화사선근종산법가속목표모형도도상평면적궤하영사과정，병제출면원투영모형강저산사면원도도상분변단원중적삽치오차。상교우전통SAR도상방진，해방법실현료방진정도여속도간적평형。실험결과표명，해문방법능구쾌속생성방진결과，방진도상여진실도상필배도고，구유교강적실용개치。
SAR imaging simulator is an important tool for understanding and implementing the SAR images. In the light of the structural features of buildings, a novel fast SAR imaging simulator for urban structures based on facet projection model is proposed to meet the requirements of the SAR image interpretation applications for buildings. The geometry mapping process from the target model to the image-domain is accelerated by using simplified ray tracing algorithm, and the facet projection model is performed to reduce interpolating error from scattering facets to resolution cells. Compared with the traditional SAR image simulator, this simulator strikes a balance between accuracy and efficiency. Some experiments validate the facet projection model and demonstrate the efficiency of the simulator, which will offer a higher value of practical applications.