为满足空间大气遥感的迫切需求，设计并研制了用于大气痕量气体探测的紫外/可见临边成像光谱仪原型样机，对应工作波段为560～780 nm和280～390 nm，分别利用光栅的一级和二级衍射。样机由单块离轴抛物面望远镜和改进型Czerny-Turner光谱仪组成，在整个工作波段内，弥散斑半径的均方根(RMS)值均小于10 μm，同时获得了良好的成像质量。原型样机质量为15 kg，体积为500 mm×350 mm×200 mm，空间分辨力为0.44 mrad，光谱分辨力为1.52 nm。利用原型样机进行了外场观测试验，并对外场观测光谱数据与模拟光谱数据进行了对比，发现二者具有很好的一致性，表明了临边成像光谱仪的功能和性能均良好，可以满足大气痕量气体探测的应用要求。

A prototype of ultraviolet (UV)/visible limb imaging spectrometer is designed and developed to satisfy the urgent requirements of space atmospheric remote sensing. The working waveband are 560～780 nm and 280～390 nm, using first order and second order diffraction of grating separately. The prototype is composed of an off-axis parabolic telescope and modified Czerny-Turner spectrometer. The root mean square(RMS) radius of the disc of confusion is less than 10 μm over the working waveband, and the image quality is obtained satisfactorily. The mass of prototype is 10 kg, the volume is 500 mm×350 mm×200 mm, the spatial resolution is 0.44 mrad, the spectral resolution is 1.52 nm, and all the requirements are satisfied. The field sounding experiment is implemented using the prototype of limb imaging spectrometer. The spectral data measured are compared with spectral data, which indicate that the prototype of limb imaging spectrometer has good function and performance, and satisfies the application requirements of sounding of atmospheric trace gas.