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介绍ＣｒｙｏＲａｄｌ低温绝对辐射计（ＨＡＣＲ），给出通过激光功率控制器（ＬＰＣ）调制过的Ｈｅ－Ｎｅ激光对所研制的Ｓｉ光电二极管陷阱探测系统进行定标的实验及结果分析
CryoRadl low temperature absolute radiometer (HACR) is introduced in this paper. The experimental and result analysis of the developed Si photodiode trap detection system is given by the laser power controller (LPC) modulated He-Ne laser