场景光谱模拟定标光源的设计技术

为了解决定标光源和遥感仪器观测场景中目标光谱之间的光谱非匹配问题，有效保证遥感仪器的定标精度，目标光谱模拟技术成为当前定标光源技术的重要发展方向。调研了定标领域中，场景目标光谱模拟定标光源技术的发展及应用案例。以数字微镜器件为例，叙述了一种基于空间光调制技术的目标光谱模拟定标光源的设计方法。这种新型的定标光源除了能够实现目标光谱的模拟，还可与标准探测器相结合，提高辐射度量的定标精度，在高光谱成像仪定标方面具有重要的应用前景。

Design Technique of Calibration Source Used to Simulate Spectra in Scene

To resolve theproblem of mismatch between the target spectra viewed by remote sensors and spectra of calibration source, and effectively guarantee the calibration accuracy, the target spectra simulation technology is a very promising evolution trend for calibration sources. The development and applications of calibration source technology used to simulate target spectra in scene in the domain of optical calibration were presented. The design of a spectrally tunable light source based on digital micromirror device (DMD) was described as an example to illuminate the design method of sources based on spatial light modulator. Besides possessing the function of target spectra simulation, this novel calibration source can be combined with the standard detector. So it is useful to improve the calibration accuracy of sensors, and can be extremely promising for calibrating hyperspectral imagers.