摘要
本文采用标量衍射理论导出球面屏衍射的瑞利-索末菲公式及其远场近似。并据此导出球面散射屏远场散斑的若干统计特征。
Rayleigh-Sommerfeld theory of planar screen diffraction is extended to spherical cases, related diffraction formula and its far field approximant within the spherical coordinate system are produced. On this basis, the statistic characters of far field speckle intensity are studied, the far field speckle intensity is theoreticaly verified to be spatial stable stachastic process. Lateral and longitudinal correlation radii are deduced, which are different from planar cases.
出处
《武汉测绘科技大学学报》
CSCD
1992年第4期79-86,共8页
Geomatics and Information Science of Wuhan University
关键词
激光散斑
统计光学
散射屏
远场
laser speckle
speckle metrology
statistic optics
speckle coherence
