Then the derivation of local illumination source is reported, the near-field electromagnetic scattering characteristics of some electrically large structures are calculated and analyzed.

论文在推导出实现局部照射的激励源的基础上，计算并分析一些电大结构的近场局部照射下的电磁散射特性。

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This is because the scattered photon energy flux from the atmosphere scattering near the source preponderate over the absorption.

这是由于源附近大气对光子散射到达探测点的注量超过大气对光子的吸收所致。

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Because of obvious difference between expanding light source and laser source, it appears different scattering peculiarity while they project to a random rough cylinder.

扩展面光源如太阳光与激光光源有明显的差异，因此它们照射到随机粗糙柱面后的散射特性也不同。

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