Optics and Precision Engineering, Volume. 20, Issue 12, 2791(2012)

Increasing dynamic range of space push-broom remote sensing camera by two-row TDI CCD

XUE Xu-cheng*... HAN Cheng-shan, XUE Dong-lin and GUO Yong-fei |Show fewer author(s)
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    To adapt a space remote sensing camera to its large dynamic scene, a scheme with two-row Time Delay Integration(TDI) CCDs was proposed to increase the dynamic range of the camera. The two-row TDI CCDs were set separately different integration stages. The obtained image with a high integration stage CCD might contain a saturation region, however its dark region could be distinguished much better.The image with a low integration stage CCD could not be distinguished better, but the gray level of bright region could be recognized easyly. Finally, the images were synthesized according to the difference of integration stages for the two-row CCDs to gain a large dynamic range image. This scheme increases the dynamic range of the camera effectively. When the integration stages of the two row CCDs are set as 8 and 48, respectively,the dynamic range can increase by 15.56 dB.

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    XUE Xu-cheng, HAN Cheng-shan, XUE Dong-lin, GUO Yong-fei. Increasing dynamic range of space push-broom remote sensing camera by two-row TDI CCD[J]. Optics and Precision Engineering, 2012, 20(12): 2791

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    Paper Information

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    Received: Aug. 29, 2012

    Accepted: --

    Published Online: Jan. 7, 2013

    The Author Email: Xu-cheng XUE (xue0818@163.com)

    DOI:10.3788/ope.20122012.2791

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