第1 章 电磁辐射的原理 ...................................................................................................................3 1 .1 电磁辐射的概述 ...................................................................................................................3 1 .1 .1 电磁辐射的定义 ........................................................................................................3 1 .1 .2 电磁辐射产生的条件 ...............................................................................................4 1 .2 电磁辐射的来源 ...................................................................................................................4 1 .2 .1 天然电磁辐射： ........................................................................................................4 1 .2 .2 人造电磁辐射： ........................................................................................................5 1 .3 电磁辐射的单位和测量标准 ...............................................................................................5 1 .3 .1 电磁辐射的单位 ........................................................................................................5 1 .3 .2 电磁辐射的测量标准 ................................................................................................5 1 .4 电磁辐射区场的划分 ...........................................................................................................6 1 .4 .1 近区场及特点 ............................................................................................................6 1 .4 .2 远区场及特点 ............................................................................................................6 1 .4 .3 .近区场与远区场划分的意义 ....................................................................................7 1 .5 电磁强度的分级标准 ........................................................................................
