空间干涉、光栅衍射和视场扩展三者结合，使空间外差光谱技术(SHS)具有超光谱、高光通的优点，被广泛应用于国防、空间遥感等领域，在对微弱信号的定量探测方面尤为突出。针对现有技术面临敏感波段、高动态范围和宽谱段的应用趋势，项目拟通过数字微镜阵列(DMD)对定域面干涉条纹进行微元级二次调制，利用单元探测器实现高动态范围、宽谱段的超光谱探测，改善SHS对敏感波段、高性能面阵探测器的依赖。.通过DMD与SHS耦合调制机理研究，对试验装置关键技术参数进行仿真与优化，揭示高动态范围、宽波段的干涉信息重构与光谱解调机制，实现自适应光调制的闭环控制。搭建基于DMD的空间外差光谱仪试验装置，进行信息重构与解调过程参数的定标，验证关键技术参数和性能指标的合理性。.研究成果有望突破现有SHS动态范围低、带宽窄和对高性能面阵探测器依赖性强这三方面的技术瓶颈，也可为其它干涉型仪器相关性能指标的改善提供方法和科学依据。

The combination of spatial interference, grating diffraction and field expansion is a highlight of spatial heterodyne spectroscopy(SHS). It has the advantages of hyperspectral and high luminous flux, and is widely used for quantitative detection in military, national security and space remote sensing. The advantage is especially obvious in the quantitative detection of weak signal. In order to solve the problems of low dynamic range, narrow band and strong dependence on the large array detectors with high performance in sensitive band, the project intends to make pixel-level secondary modulation of interferogram through digital micro- mirror device(DMD), so that the high dynamic range and wide waveband hyperspectral detection can be realized by using the unit detector..The project focuses on the coupling mechanism analysis of SHS and DMD coupling modulation, the simulation and optimization of key technical parameters of the system, the reconstruction and demodulation technology of high dynamic range information, and the closed-loop control of adaptive optical modulation. By building the experimental device of spatial heterodyne spectrometer based on DMD, the calibration of process parameters in information reconstruction and demodulation is carried out, and the key technical parameters performance indicators are verified..The project results will provide a new technology for high dynamic range hyperspectral detection, and also provide technical reserves for interferogram extraction and spectral reconstruction of other interferometric spectrometers..The project results will provide a new technology for high dynamic range hyper spectral detection, and also provide technical reserves for interferogram extraction and spectral reconstruction of other interferometric spectrometers.