基于刃边法的航天光学遥感器在轨MTF测试研究  

On Orbit MTF Test Research of Remote Sensors Based on Knife-edge Method

作　　者：赵占平[1] 付兴科[1] 黄巧林[1] 李永强[1] 

机构地区：[1]北京空间机电研究所,北京100076

出　　处：《航天返回与遥感》2009年第2期37-43,共7页Spacecraft Recovery & Remote Sensing

摘　　要：调制传递函数(MTF,Modulation Transfer Function)在轨测试是监测航天光学遥感器在轨运行性能的重要指标。准确把握遥感成像系统MTF在运行过程中的变化,关系到遥感数据资源的合理及有效利用。文章对刃边法测试MTF的原理及仿真算法进行了阐述,重点对刃边倾角、辐射定标和刃边图像的对比度对MTF测试精度的影响进行了仿真分析。Measurement of the Modulation Transfer Function （MTF） was an important index of the on orbit test for the optical remote sensor. Knowing the changes of on orbit MTF was very useful for reasonable and effective use of the data. The article studied the measurement theory and simulation arithmetic of knife - edge method, and analyzed the influences of knife - edge slant, radiometric calibration and image contrast on accuracy of the MTF measurement.

关 键 词：调制传递函数 在轨测试 刃边法 辐射定标 光学遥感 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计] TP334.22[自动化与计算机技术—计算机系统结构]