极轨星载TDI CCD相机的像移及恢复算法研究

陈梁; 刘春霞; 龚惠兴

doi:10.11834/jrs.20020107

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极轨星载TDI CCD相机的像移及恢复算法研究
Image Shift and Compensation of TDI CCD Camera for Polar Orbit Satellite
2002年第1期页码：35-39
纸质出版：2002
DOI： 10.11834/jrs.20020107
稿件说明：

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[1]陈梁,刘春霞,龚惠兴.极轨星载TDI CCD相机的像移及恢复算法研究[J].遥感学报,2002(01):35-39. DOI： 10.11834/jrs.20020107.

CHEN Liang, LIU Chun_xia, GONG Hui_xing. Image Shift and Compensation of TDI CCD Camera for Polar Orbit Satellite[J]. Journal of Remote Sensing, 2002, (1): 35-39. DOI： 10.11834/jrs.20020107.

摘要

根据TDICCD特殊的工作方式

预测了由于地球自转而引起的极轨星载TDICCD相机的特殊像移及其对图像的影响

根据TDI像移产生的机理建立了数学模型

并求出了像移恢复滤波器的数字表达式

经过计算机仿真证明图像恢复算法有效。

Abstract

Due to the special operation mode of TDI CCD

image shift is resulted from earth self

otation in polar orbit sensing. This kind of image shift makes image degradation

resolution decrease

and target margin mistiness. Compensating the shifted image is an important problem that must be resolved in the application of polar orbit satellite TDI CCD camera. In this paper

the image shift of TDI CCD camera for polar orbit satellite is forecasted

then the effect of image degradation is calculated. A mathematical model is set up according to the principle of TDI image shift

and an image compensation filter is worked out

which is proved to be valid by computer simulation.