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红外地平仪是用于卫星姿态控制的一种仪器。由于要控制卫星姿态稳定,就要求此仪器在卫星上所接收到的地-气系统的红外辐射量相当恒定。要达到这个目的,需要从两方面来考虑:一方面要选择大气中含量比较恒定的气体成份,而且其吸收带对于其他大气成份可近似于“透明”,关于这一点,二氧化碳的15微米吸收带可以满足;另一方面,在选定了二氧化碳15微米带之后仍有一个通道选择问题,因为通道(频段位置和宽度)不同,通过大气的
Infrared is a device for satellite attitude control. Because of the need to control satellite attitude stability, it is required that the amount of infrared radiation of the ground-to-air system received by this instrument on the satellite be fairly constant. To do this, we need to consider two aspects: on the one hand, we should choose a relatively constant content of the atmosphere gas composition, and its absorption band for other atmospheric components can be similar to the “transparent”, in this regard, 15 micron absorption of carbon dioxide On the other hand, there is still a problem of channel selection after the 15 micron band of carbon dioxide has been selected because of the difference in channel (frequency band position and width)