| 长波红外相机多次采样叠加对MTF的影响分析 |
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| 引用本文： | 李丕丁 李玉敏 傅雨田 龚惠兴. 长波红外相机多次采样叠加对MTF的影响分析[J]. 红外与毫米波学报, 2006, 25(1): 13-16 |
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| 作者姓名： | 李丕丁 李玉敏 傅雨田 龚惠兴 |
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| 作者单位： | 中国科学院上海技术物理研究所,上海,200083;中国科学院研究生院,北京,100039;中国科学院上海技术物理研究所,上海,200083 |
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| 摘 要： | 根据长波红外相机积分时间短的特点,阐述了多次采样叠加技术的原理和应用.并在此基础上分析了采用多次采样叠加技术对系统MTF产生的影响.给出了不同采样系数和叠加次数对应的系统MTF变化.当采样系数固定时,探测器MTF随叠加次数的增加而减小,系统推扫方向MTF随叠加次数的增加而减小.
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| 关 键 词： | 红外焦平面阵列 多次采样累加 调制传递函数 红外相机 |
| 文章编号： | 1001-9014（2006）01-0013-04 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-10-17 |
EFFECT OF OVERSAMPLE-SUPERPOSITON ON MTF FOR LONG WAVE INFRARED CAMERA |
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| LI Pi-Ding,LI Yu-Min,FU Yu-Tian,GONG Hui-Xing. EFFECT OF OVERSAMPLE-SUPERPOSITON ON MTF FOR LONG WAVE INFRARED CAMERA[J]. Journal of Infrared and Millimeter Waves, 2006, 25(1): 13-16 |
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| Authors: | LI Pi-Ding LI Yu-Min FU Yu-Tian GONG Hui-Xing |
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| Affiliation: | 1. Shanghai Institute of Technical Physics , Chinese Academy of Sciences, Shanghai 200083, China; 2. Postgraduate School, Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | According to the short integration time characteristics of long wave infra-red focal plane array,the principle and application of oversample-superpositon technique were discussed.The effect of oversample-superpositon on the MTF of system was analyzed on the basis of the chareacteristics of LWIR FPA.The corresponding oversample-superpositon MTFs at different sampling and superpositon time were given.As the superposion time decreases,the detector MTF is reducing while system scanning MTF is rising when the sampling time is fixed. |
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| Keywords: | IR focal plane array oversample-superpositon modulation transfer function(MTF) long-wave infrared camera |
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