摘要
空间光学遥感器在轨工作期间,会受到平台振动源的影响,从而对成像质量产生影响。振动源使遥感器在积分时间内产生颤振,导致在成像过程中发生像移,使图像模糊。讨论了颤振对光学遥感器成像的影响。以低频正弦振动为例通过数值方法推导了颤振引起像移的数学模型,并给出了颤振对调制传递函数MTF的影响公式。仿真结果表明,颤振对空间光学遥感器成像质量影响很大,应在设计中加以考虑。
Satellites jitter occurs during the running of space-born remote sensing systems, affecting imaging quality, such as image motion and blur. It is needed to research the influence of jitter on imaging quality, which was discussed in this paper. And the method of numerical calculation on image motion and modulation transfer function （MTF） caused by jitter was given. The simulation shows that jitter has a great impact on imaging quality, which should be considered in designing space-born remote systems.
出处
《计算机仿真》
CSCD
北大核心
2012年第1期25-27,66,共4页
Computer Simulation
关键词
空间光学遥感器
颤振
像移
像质
Space-born remote sensor
Jitter
Image motion
Imaging quality
