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首先介绍了三线靶标法在轨MTF评价的研究进展、分析了三线靶标法的优点和存在的问题;其次在介绍三线靶标法原理的基础上,提出了三线靶标的布设要求和靶标数据处理方法;最后本文基于理论分析和仿真实验,重点分析了相关因素(靶标尺寸,传感器光谱响应函数,相对采样相位,靶标相对倾角,靶标对比度与随机噪声等)对三线靶标法评价精度的影响,为实施三线靶标法在轨MTF评价提供理论指导,并为评价结果提供了定量化的精度分析。 更多还原

【Abstract】 Modulation Transfer Function(MTF) is one of the most comprehensive and standard measure to characterize the on-orbit performance of optical sensors.Estimation methods of on-orbit MTF can generally be divided into three-bar method,point source/array method,pulse method,knife-edge method and bi-resolution method according to the target.Among those methods,three-bar method is relatively straightforward,and it is widely used in laboratory measurement and on-orbit estimation.In this paper,quantifying... 更多还原