液晶与显示Issue(5)：851-856,6.DOI:10.3788/YJYXS20153005.0851
遥感相机静态调制传递函数的地面测试原理
Principle of static modulation transfer function measurement for remote sensing cameras
摘要
Abstract
In order to precisely measure the modulation transfer function of the space camera at any frequency before launching,the measuring method is elaborated and some experiments are carried out. On the basis of giving the schematic diagram of modulation transfer function measurement,the trans-fer process of a sinusoidal and a square wave at any frequency are investigated.Consequently,the modulation transfer function and the contrast transfer function are derived,based on which the con-version coefficient of them is obtained as π/4 at any frequency.Finally,an experiment is implemented and the modulation transfer functions at 1,1/2 and 1/3 Nyquist frequency are measured based on a certain remote sensing camera.The experiment result indicates that the modulation transfer functions at 1,1/2 and 1/3 Nyquist frequency of the remote sensing camera used are 0.21,0.40 and 0.59 at lab condition.Moreover,the reduction between the optical system modulation transfer function calculated on account of test results and the design value is near 1,which proves our derivation in this paper.关键词
遥感/调制传递函数/测量/时间延时积分电荷耦合器件Key words
remote sensing/modulation transfer function/measurement/TDI CCD分类
机械制造引用本文复制引用
吕恒毅,李祥之,韩诚山,薛旭成..遥感相机静态调制传递函数的地面测试原理[J].液晶与显示,2015,(5):851-856,6.基金项目
国家自然科学基金(No．61036015) （No．61036015）
吉林省青年科研基金(No．20150520059JH) （No．20150520059JH）
