空间碎片的红外探测研究

Research on space debris of infrared detection

分析了空间碎片在轨运行时的空间辐射环境,通过分析空间碎片受到太阳、地球、月球等辐射的情况,计算其温度变化情况,并计算了8～12μm波段空间碎片的辐射情况。分析了红外探测器的噪声来源与类型,并计算了探测器接收的空间碎片红外辐射以及光学近场辐射所产生的电子数,然后分别计算了在目标温度不变与光学系统温度不变的情况下的信噪比(SNR)。结果显示,在以深空为探测背景的情况下,光学系统近场辐射是对系统探测距离影响最大的辐射。

Analysis of the space radiation environment of space debris in orbit, the radiation with the temperature changes by the sun, the earth, the moon and other space debris in space orbit was researched in this paper. The radiation of space debris whthin 8 - 12 μm is calculated. Analysis of the noise source and type of the infrared detector, and calculate the number of electrons generated by the detector receives infrared radiation of the space debris and the optical near-field radiation, and then calculate the signal noise ratio （SNR） with the constant temperature of the target temperature and the optical system. The results show that the near-field optical system in the case of deep space probe background radiation affect the maximum radiation system to the detection range.