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单从黑体辐射的光谱分布和大气的红外透过特性来看,对环境温度的远距离目标进行小量辐射通量差的探测时,用10微米大气窗比用5微米大气窗好。我们对海洋背景下的一只小船进行了辐射计探测,探测距离为2～14公里。测量中同时采用了对5微米波段灵敏的InSb探测器和对10微米波段灵敏的Hg_(1-x)Cd_xTe探测器。短期测量结果表明,完成此项任务以选择Hg_(1-x)Cd_xTe探测器为最好。除探测器性能外,影响探测效能的最重
Judging from the spectral distribution of blackbody radiation and the infrared transmission characteristics of the atmosphere, the detection of a small amount of radiant flux at a long-range target at ambient temperature is better than using a 10-micron atmospheric window with a 5-micron atmospheric window. We conducted a radiometer survey of a small boat in the ocean, with a detection range of 2 to 14 kilometers. The measurement uses both InSb detectors sensitive to the 5 micron band and Hg_ (1-x) Cd_xTe detectors sensitive to the 10 micron band. Short-term measurements show that it is best to perform this task to select Hg_ (1-x) Cd_xTe detectors. In addition to the detector performance, the most influential detection efficiency