%0 Journal Article
%T APPARENT EMITTING CHARACTERISTICS OF SEMI-TRANSPARENT ISOTHERMAL MEDIUM LAYER WITH GRADED INDEX<br>梯度折射率半透明等温介质层的表观发射特性
%A HUANG Yong
%A TAN He
%A Ping
%A XIA Xin
%A Lin
%A <br>黄勇
%A 谈和平
%J 红外与毫米波学报
%D 2001
%I Science Press
%X By simulating the inside thermal emission of the medium and the radiation transfer process, the apparent emitting characteristics of a semi transparent medium layer with graded index (GRIN) was investigated. The pseudo source adding method was combined with the ray splitting and tracing technique in simulation.When constant and linearly distributed refractive indexes were considered for an isothermal layer, the apparent directional and hemispherical emissivities were both presented and analyzed for different parameters. In addition, the influence of the discrete sub layer number on the calculating was discussed. The results show that the graded refractive index may considerably affect the apparent emission of a semi transparent medium layer.
%K semi
%K transparent medium
%K graded refractive index
%K emitting characteristics
%K pseudo
%K source adding method
%K ray splitting and tracing technique<br>半透明介质
%K 梯度折射率
%K 表观发射特性
%K 伪光源透加法
%K 光线分裂跟踪技术
%K 等温
%K 离散层数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=D3B4F771D1A06062008B4D0A2EF05996&aid=B9572B4F68AD6B0C83A9AEE7339E64A4&yid=14E7EF987E4155E6&vid=A04140E723CB732E&iid=94C357A881DFC066&sid=375BEEEA164CFE59&eid=EA64BD0B2FF6E786&journal_id=1001-9014&journal_name=红外与毫米波学报&referenced_num=1&reference_num=7