CBERS-02星红外数据系统正反扫描行配准方法研究

CBERS-02星搭载的有效载荷有一台是红外多光谱扫描仪（IRMSS），它是摆扫式的相机，与推扫式的CCD相机成像方式不同。摆扫式IRMSS相机的几何校正处理对比推扫式相机更为复杂，特别是正反扫描行之间，容易出现不配准、有缝隙或叠加等问题。文章根据IRMSS成像的机理，对CBERS-02星IRMSS图像存在的扫描行不配准问题进行了改进，达到了良好的效果。

Study of Match Processing between Scan Lines of IRMSS Images of CBERS- 02

CBERS- 02 carries one IRMSS payload which collect the data in a whisk broom way. Its geometrical correction is more difficult than the sensor of push - broom type due to those problems associated with its special imaging system, such as the mismatch, under- lap and overlap between the forward and inverse scan lines. Based on the mechanism of IRMSS, this paper studied the profile of scan mirror of IRMSS and corrected its movement parameters for eliminating the zigzag mismatch phenomenon in CBERS - 02 IRMSS images. The results showed that the method in this paper was practicable and effective.