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L波段微波辐射计冷空定标源亮温分析
Alternative TitleAnalysis of the Cold Sky Brightness Temperature ofL2band Radiometry Calibration
马冠男; 吴季; 刘浩; 北京8701信箱
Department国家863计划微波遥感技术实验室
Source Publication遥感技术与应用
2008
Volume23Issue:2Pages:219-223,I0005
ISSN1004-0323
Language中文
KeywordL波段微波辐射计 定标源 冷空 亮温分析
Abstract欧空局SMOS任务的塔克拉玛干沙漠地面定标实验,采用L波段微波辐射计测量塔克拉玛干沙漠的土壤亮温.此辐射计的定标采用冷空作为低温定标源.由于冷空的情况比较复杂,在L波段,其亮温受到诸多因素的影响.根据日地关系,太阳与天线的位置关系,建立太阳辐射模型,得出了任意时刻太阳进入天线视场范围内的影响亮温值,并简要分析了月球,其它星球,中性氢原子分立谱发射和热源连续谱发射对辐射亮温的影响,为选取冷空作为低温定标源提供了理论及数据参考.
Other AbstractThe ground calibration experiment for ESA’ s SMOS Mission will use an L2band radiomet ry to measure soil bright ness temperat ure of Takelamagan Desert . This radiomet ry’s calibration " cold" target is cold sky. Because of t he complex condition ,in L2band ,many factors have effect on bright ness temperat ure of cold sky. This issue establishes a sun radiation model to calculate real2time bright ness temperat ure when it crosses t he view field of antenna to t he position relationship between sun and eart h , al so between sun and antenna. It analyzes briefly t he radiomet ric temperat ure under the influences of moon ,planet s in our solar system and galactic radio emission. This issue provides theoretical and numerical reference for choosing the cold sky as " cold" target in calibration.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/2049
Collection微波遥感部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
马冠男,吴季,刘浩,等. L波段微波辐射计冷空定标源亮温分析[J]. 遥感技术与应用,2008,23(2):219-223,I0005.
APA 马冠男,吴季,刘浩,&北京8701信箱.(2008).L波段微波辐射计冷空定标源亮温分析.遥感技术与应用,23(2),219-223,I0005.
MLA 马冠男,et al."L波段微波辐射计冷空定标源亮温分析".遥感技术与应用 23.2(2008):219-223,I0005.
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