摘要
本文在严格的远区散射场的框架下,探讨了物象重建问题。指出在散射一逆散射问题中,只存在两维傳氏对偶空间。文中提出在单一波数,单一入射并且小成象角条件下成象的似视原理。揭示了在散射成象问题中存在着成象角与工作波长的互补关系。理论结果由计算机模拟得到验证。最后对用波的理论解释人的视觉机制作了尝试。
Within the framework of exact scattering theory and under the wave zone condition, the image reconstruction is studied. It is demonstrated that there is only a two dimensional Fourier dual space in the problem of scattering-inverse scattering. An eyelike principle for the imaging at monofrequency, monoincidence and small imaging angle is proposed and an interesting complementary relation between the imaging angle and operation wave length for the inverse scattering is revealed. Theoretical results are verified by computer simulations. An explanation on interpreting human vision with wave theory is attempted.
基金
国家自然科学基金
关键词
散射成象
逆散射
似视原理
成象角
Image reconstruction of the scatterer, Inverse scattering, Eye like principle, Imaging angle
