高光谱传感器的光谱定标是实现高光谱遥感定量化的关键。为了克服传统的基于单色仪扫描的光谱定标方法存在的设备昂贵、耗时等缺点，实现色散型高光谱传感器在野外或飞行中的实时、高精度定标，提出了一种基于特征吸收波长板的色散型高光谱传感器系统级光谱定标方法。分别对特征吸收波长板和漫反射参照体反射信号进行了比对测量，通过优化计算得到了传感器通道的中心波长和带宽。该方法消除了待定标传感器的光谱响应和光源的光谱能量分布带来的影响，能快速准确地实现色散型高光谱传感器的波长定位。运用该技术实现了对野外光谱辐射计FieldSpec UV/VNIR的光谱定标，并对影响光谱定标精确度的因素进行了分析计算，结果表明，该方法实现的波长准确度<0.5 nm，可满足色散型高光谱传感器实时、高精度光谱定标的需要。

Spectral calibration is a key to realize the quantification of hyperspectral remote sensing. Traditionally, the spectral calibration for a hyperspectral sensor is performed by a monochromator scanning method with disadvantages of expensive, time-consuming,etc.,which is difficult to achieve the real-time and high-accuracy spectral calibration in the field or in-flight.In this paper,an accuracy and fast system level spectral calibration method was described for determining the center wavelengths for every spectral channel simultaneously. The reflective signals of a diffuse reflectance standard panel and a diffuse reflectance standard panel doped with a rare earth oxide were measured by the hyperspectral sensor. The ratio of two signals was optimized to remove the effects of sensor spectral response and lamp spectral output. By assuming a certain parametric model of the sensor and performing a nonlinear least squares fit of the measured ratio to the expected ratio, the center wavelength and bandwidth could be derived. A field spectroradiometer, FieldSpec UV/VNIR,was calibrated by proposed method,and the factors that effect on the calibration accuracy were analyzed. The results show that the wavelength accuracy is less than 0.5 nm,which indicates that the technology can meet the urgent needs of high accuracy and fast spectral calibration of hyperspectral sensors.