Calibration coefficients for absolute radiance conversion of 16-bit QuickBird images1).

1) Revised factor for the panchromatic band varies with its exposure levels using time-delayed-integration (TDI); factor value is positively proportional to the TDI level, which can be found in. IMD files. Revised factor was set to 1 for each band for the product generated after June 6, 2003. Coefficients listed in the table address the case for 10 TDI levels. Absolute calibration coefficients for each band are also available from the. IMD file [32].Calibration coefficients for absolute radiance conversion of 16-bit QuickBird images1).

1) 全色波段（panchromatic band）的校正因子会随其采用延时积分（time-delayed-integration, TDI）的曝光等级发生变化；该因子数值与TDI等级呈正相关，相关参数可于IMD文件中查询。2003年6月6日之后生成的产品，其各波段的校正因子均被设置为1。表格中所列系数对应10级TDI的应用场景。各波段的绝对定标系数同样可从IMD文件[32]中获取。适用于16位快鸟（QuickBird）影像的绝对辐射亮度转换定标系数。