CAJ | 학술논문

为了监测夜间和晨昏时段的低云大雾，实现云的三维立体成像，对微光立体成像的关键技术进行了研究。首先，介绍了微光立体成像原理，分析了成像需要解决的宽视场覆盖和多镜头布局。然后，介绍了实现微光探测需要解决的低照度成像技术及其实现方法。最后，针对观测目标照度变化较大的问题，提出了动态范围拓展技术，介绍了后期数据处理中的云雾监测技术。仿真计算结果表明：采用电子倍增CCD（EMCCD）探测器和推扫扫描成像模式、集成探测器组件以及多台相机拼接方案可有效实现微光立体成像，相机扫描幅宽超过2800 km；高程分辨率＜817.7 m。提出的成像技术可在低照度条件下监测低云大雾，获取高分辨率的三维立体云图，满足气象海洋探测的需求。
위료감측야간화신혼시단적저운대무，실현운적삼유입체성상，대미광입체성상적관건기술진행료연구。수선，개소료미광입체성상원리，분석료성상수요해결적관시장복개화다경두포국。연후，개소료실현미광탐측수요해결적저조도성상기술급기실현방법。최후，침대관측목표조도변화교대적문제，제출료동태범위탁전기술，개소료후기수거처리중적운무감측기술。방진계산결과표명：채용전자배증CCD（EMCCD）탐측기화추소소묘성상모식、집성탐측기조건이급다태상궤병접방안가유효실현미광입체성상，상궤소묘폭관초과2800 km；고정분변솔＜817.7 m。제출적성상기술가재저조도조건하감측저운대무，획취고분변솔적삼유입체운도，만족기상해양탐측적수구。
In order to detect low clouds and heavy fogs during nighttime and twilight , and to achieve three-di-mensional imaging of the clouds, the key technologies of shimmer tridimensional imaging were discussed . First, the theory of shimmer tridimensional imaging was introduced , and the wide-field coverage and multi-lens layout for imaging were analyzed.Then, the low-light imaging technology and its implementation were intro-duced.Finally, aiming at the larger illuminance change of an observed target , the dynamic range expanding technology is presented, and detecting technology for clouds and fogs was introduced .Emulation calculation results indicate that the EMCCD detector and push-broom imaging mode, integrated detector assembly and the multi-camera stitching program can effectively realize shimmer tridimensional imaging .The camera swath is beyond 2 800 km and elevation resolution is less than 817.7 m.By using this imaging technology, we can de-tect the low clouds and heavy fogs in a low-light condition, and can get high-resolution three-dimensional ima-ging of the clouds, which satisfies the requirements of meteorologycal and oceanic detection .