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进一步剖析"从太空看长城"的争论
引用本文:戴昌达,姜小光,习晓环.进一步剖析"从太空看长城"的争论[J].科技导报(北京),2007,25(4):72-76.
作者姓名:戴昌达  姜小光  习晓环
作者单位:中国科学院光电研究院,中国科学院光电研究院,中国科学院光电研究院 北京100080 中国科学院地理科学与资源研究所,北京100101 中国科学院中国遥感卫星地面站,北京100086,北京100080,北京100080
摘    要:针对至今国内外媒体对“从太空看长城”问题仍不断出现的各种似是而非的说法误导读者,进一步阐述人眼从光觉、色觉,发展到形觉的机理,以及产生平面形觉、立体形觉受制于观察物体大小与距离的理论依据,同时展示了笔者进行的卫星遥感试验的主要成果。在此基础上,针对至今反映出来的5种主要看法一一进行剖析,进一步确认肉眼不可能从太空轨道看到长城,只有达到一定空间分辨率的卫星遥感才能获得长城影像的结论。

关 键 词:长城  太空  视觉原理  卫星遥感
文章编号:1000-7857(2007)04-0072-05
修稿时间:11 22 2006 12:00AM

An Analysis on the Issue of "Seeing the Great Wall from Space"
DAI Changda,JIANG Xiaoguang,XI Xiaohuan.An Analysis on the Issue of "Seeing the Great Wall from Space"[J].Science & Technology Review,2007,25(4):72-76.
Authors:DAI Changda  JIANG Xiaoguang  XI Xiaohuan
Institution:1. Academy of Opto-Electronics, Chinese Academy of Scienees, Beijing 100080, China 2. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Scienees, Beijing 100101, China 3. China Remote Sensing Satellite Ground Station, Chinese Academy of Scienees, Beijing 100086, China
Abstract:From the mechanism of optical sensing, color sensing and shape sensing of human eyes, this paper shows that the plane shape sensing and solid shape sensing depend on the size and the distance of the observed objects. With this point of view in mind and with the main research results of the Great Wall remote sensing image processing, various statements on this issue are analyzed and it is shown that human eyes can not see the Great Wall from space orbit, which can only be seen from the Great Wall image of high spatial resolution satellite sensing.
Keywords:Great Wall  space orbit  visual theory  satellite remote sensing
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