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介绍了红外光谱辐射计的组成及工作原理，分析了其信号处理方法。红外光谱辐射计的核心是分光元件、光学系统及信号处理部分。该设备采用容易调整的高像质反射光学系统和波长在２５～１４μｍ连续可变的分光系统，并采用高集成度、高精度的数据采集、数字锁相和数据处理、存储系统。观察瞄准、探测接收的光学系统以及数据采集、处理系统都被放到一个体积很小的测量头中，具有体积小、质量轻牢固可靠、抗干扰性能强和使用方便等优点。入瞳的最小可探测率为１０－１２Ｗ／ｃｍ２，光谱分辨率为２％，测量速度为１０条谱线／ｓ。经实际检测和使用，该设备的性能达到国内外先进水平，并具有野外工作的特点。
The composition and working principle of infrared spectrometer are introduced, and the signal processing method is analyzed. At the heart of infrared spectroradiometers are spectroscopic components, optical systems and signal processing components. The device uses a high-quality reflex optical system that is easy to adjust and a continuously variable spectral system with a wavelength of 2 5 ~ 14μm, and adopts highly integrated, high precision data acquisition, digital phase locking and data processing and storage systems. Observe the sight, the optical system and the data acquisition and processing system are all put in a small measuring head, which has the advantages of small volume, light and solid light, strong anti-interference performance and easy to use. Inlet pupil minimum detectable rate of 10-12W / cm2, spectral resolution of 2%, the measurement speed of 10 lines / s. The actual test and use, the performance of the device to achieve the advanced level at home and abroad, and has the characteristics of field work.