红外探测器的光谱响应一致性影响高光谱成像仪器的动态范围，研究高光谱成像用拼接型短波红外探测器在同一光谱维的响应均匀性对提高高光谱成像性能有重要意义。通过测量相对光谱响应和窄带响应，对响应波段为1.0~2.5 μm、规格为2000×256的碲镉汞短波红外探测器光谱响应率进行测量和分析，提出用光谱响应非均匀性定量化分析光谱响应一致性。分析了在80 ℃和140 ℃不同的黑体温度下，窄带滤光片的中心波长和半带宽不同时，带外截止深度为OD3时，带外信号对窄带性能测试误差的影响。通过测量探测器模块的光谱响应率，计算拼接的2000×256探测器在1 μm、1.9 μm和2.5 μm处的响应非均匀性分别为6.23%、6.06%和4.07%。光谱响应率的准确测量实现了拼接型短波红外探测器的光谱响应一致性的定量化评价，有利于探测器在高光谱成像中的合理应用。

超构表面阵列分光具有高透射、低损耗、高集成度的特点，是当前微纳结构领域的研究热点。本文提出了一种由Si和SiO₂组成的超构表面红外分光阵列。以不同波长的红外光入射单元，仅改变圆柱半径，分别计算不同波长的透射率和出射相位随半径的变化。根据广义斯涅尔定律，选择具有不同圆柱半径的若干单元组成超构表面分光周期。该周期对不同波长的入射光具有对应的透射相位梯度，验证了超构表面阵列具有分光功能。对超构表面红外分光阵列可能的应用提出了展望。结果表明：以半径为150，250，300 nm的3个Si纳米柱组成的超构表面周期可以将波长2.7 μm和2.9 μm的混合入射红外光分离，并且透射率达到70%以上。

To measure the global atmospheric three-dimensional distribution and change of temperature and humidity is one of the key areas in atmospheric remote sensing detection; it is also a new research and development direction in the field of meteorological satellite application. As a main element of China second generation of geostationary meteorological satellite Fengyun 4 (FY-4), which was launched on Dec. 11, 2016, the Geostationary Interferometric Infrared Sounder (GIIRS) is the first interferometric infrared sounder working on geostationary orbit internationally. It is used for vertical atmospheric sounding and gains atmospheric temperature, humidity, and disturbances. The combination of Fourier transform spectrometer technology and infrared detectors makes GIIRS have high spectral resolution and large coverage over spatial areas. With this kind of instrument, meteorological satellites can improve the capabilities for severe weather event monitoring and numerical weather prediction. Here a concise review of the GIIRS development project, including its history, missions and functions, technical design, key technologies, system integration, calibration and in-orbit operation status, etc., is presented.