【摘要】 提高卫星遥感数据的质量,进而实现定量化应用,其基本前提和关键在于传感器的绝对辐射定标.为检验Terra卫星MODIS(Moderate-Resolution Imaging Spectroradiometer)传感器的星上定标系数的准确性和可靠性,2007-05在北京遥感综合实验场网内蒙二连浩特实验场,采用反射率基辐射定标方法对MODIS可见-近红外波段开展定标与真实性检验.结果表明,场地定标系数和MODIS的星上系数非常吻合,相对差异小于6%,证明场地反射率基辐射定标方法定标和MODIS星上定标得到的定标系数均准确、可信度高.更多还原

【Abstract】 Radiometric calibration is the key to improving quality and quantitative applications of the remote sensor data.A comprehensive calibration and validation experiment of MODIS(Moderate-Resolution Imaging Spectroradiometer)visible and near-infrared bands was performed by National Spaceborne Demonstration at the ErLianhot test site in May 2007 in order to validate the veracity of MODIS on-orbit calibration coefficients.The reflectance-based calibration method was used. It was found that the vicarious calibration results were in good agreement with the MODIS on-board calibration results with the deviation less than 6% at the ErLianhot test site.The results showed that the calibration results of both vicarious calibration and on-orbit calibration was highly reliable.更多还原