Verification method of spectral calibration accuracy for hyperspectral remote sensors

Validation for radiometric and spectral calibration accuracy of hyperspectral remote sensor is necessary. Taking SVC spectral radiometer as an example, new type spectrum-tunable reference light source (STIS) and muti-band radiance standard transfer detector(MRSTD) are used to design validation method for radiometric and spectral calibration accuracy. In this method, spectral level of spectral shape is monotonically increasing and monotonically decreasing in measured band by new spectral adjustable integrating sphere reference light source. Wavelength of SVC spectral radiance is changed by spectral matching technique. Relative deviation of radiance measured by MRSTD and SVC spectral radiometer are calculated and contrasted. Contrast shows that spectral calibration accuracy is better than ±0.2 nm, and absolute radiometric calibration accuracy is less than 5%.