颤振对TDICCD相机像质的影响分析

为了分析卫星颤振对TDICCD相机像质的影响,给出了低频正弦颤振引起的相机像移,重点分析了滚动、俯仰、偏航三个方向的颤振对相机成像质量的影响.通过对两种卫星颤振动力学仿真数据的计算,具体研究了颤振对相机像质的影响程度.结果表明,TDICCD相机对卫星颤振幅值要求较高,且随TDI积分级数的增加,颤振的影响尤为突出,必须加以限制.

Influence Analysis of Buffeting on Image quality of TDICCD Camera

In order to analyze the influence of the satellite buffeting on the image quality of the TDICCD camera,the image motion introduced by the low frequency sine buffeting was given.The influence of the image motion along the roll,pitch,yaw direction on the image quality was studied chiefly.Finally,the degradation of the image quality caused by the buffeting was computed concretely according to the datum come from two kinds of the emulation on the satellite kinetic buffeting.The results show that,with the increase of TDICCD integration number,the requirement of TDICCD camera for buffeting amplitude is more stringent,and must be limited.