为提高空间目标温度的测量精度而进行波段优选方法的探索。建立空间目标温度测量数学模型和波段优选评价函数数学模型，仿真分析探测波段对红外系统的测温灵敏度、温度分辨力和信噪比的影响，实现系统探测波段的优选。仿真结果表明，优选的探测波段为中心波长范围8.0 μm～9.6 μm，波段宽度60 nm，温度分辨力最高可达到0.06 K，同时可获得大于5的信噪比。结论：提出的方法可以使测温灵敏度和温度分辨力分别平均有8.7%和11.3%的提高。

This paper proposed a method to enhance the sensitivity and the resolving power of the space object's temperature measurement through optimizing the waveband. We built the mathematical model for measuring the temperature, in terms of the signal-to-noise ratio(SNR) and the relationship among the relative temperature measurement sensitivity, the temperature resolving power，the linearity of the metrical curve and the working waveband, and optimized the central wavelength and the bandwidth. The optimal results show that the wavebands fit for measuring is 8.0 μm ~9.6 μm, the bandwidth is 60 nm, the biggest resolving power of the measurement temperature is 0.06 K, and an SNR above than 5 is achieved. The proposed method improves the resolving power of temperature measurement and the measurement sensitivity of the system by 8.7% and 11.3% respectively.