嫦娥一号IIM数据定标的改进方法
摘要
The Chang'E-1 IIM data must be calibrated before using to inverse the element abundance of the lunar surface. In this study, we have done an adjustment to the IIM data before converting into reflectance. First we recover the bad lines and bad points, then remove the stripes, and last convert the radiance into reflectance. This data processing procedure will remove the bad lines, bad points and flat field effect to influence the calibration results. After that, we make a cross correction between IIM data and ground telescopic spectra, and calculate the gain and offset between them. At last, we appliy the gain and offset to correct the spectra of other lunar locations, including Apollo 16 and 14 landing points, Mare Serenitatis and Copernicus crater wall. The cross corrected IIM spectra seems equal with those acquired by ground telescope, indicating the effective of the cross correction to the other lunar locations.