Volume 6 Issue 5
Oct.  2013
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HU Xiao-hua, ZHOU Xiao-zhong, LIU Song-tao, ZHANG Chun-hua, YANG Nan. Spaceborne shimmer tridimensional imaging technology and its implementation[J]. Chinese Optics, 2013, 6(5): 701-709. doi: 10.3788/CO.20130605.0701
Citation: HU Xiao-hua, ZHOU Xiao-zhong, LIU Song-tao, ZHANG Chun-hua, YANG Nan. Spaceborne shimmer tridimensional imaging technology and its implementation[J]. Chinese Optics, 2013, 6(5): 701-709. doi: 10.3788/CO.20130605.0701

Spaceborne shimmer tridimensional imaging technology and its implementation

doi: 10.3788/CO.20130605.0701
  • Received Date: 13 Jul 2013
  • Rev Recd Date: 16 Sep 2013
  • Publish Date: 10 Oct 2013
  • In order to detect low clouds and heavy fogs during nighttime and twilight, and to achieve three-dimensional 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 introduced. 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 detect the low clouds and heavy fogs in a low-light condition, and can get high-resolution three-dimensional imaging of the clouds, which satisfies the requirements of meteorologycal and oceanic detection.

     

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