Experimental research on earth radiation in IR wave band

The range of earth radiation includes visible light,near inflated,mid infrared,thermal infrared,etc. Because earth radiation relates to clutter radiations and reflections,solar radiation,atmospheric transmission,etc,it has been studied from different angles in many fields.The importance of studying earth radiation is briefly explained by analyzing characteristic and study progress of earth radiation in the paper.Research and analysis of earth radiation's characteristic in near infrared and mid infrared arc researched by measuring data.With Modtran simulating software,numerical value of theory is compared with measuring data.Finally,significance of this experimental research is summarized and next plan is given.