ZHANG Lin, WU Xiao-qin, TANG Gong-min. Analysis of synchronization error for time delayed integration (TDI) CCD imaging system based on MTF[J]. Journal of Applied Optics, 2006, 27(2): 167-170.
Citation: ZHANG Lin, WU Xiao-qin, TANG Gong-min. Analysis of synchronization error for time delayed integration (TDI) CCD imaging system based on MTF[J]. Journal of Applied Optics, 2006, 27(2): 167-170.
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Analysis of synchronization error for time delayed integration (TDI) CCD imaging system based on MTF

  • 1.

    School of Mechanical Engineering,Nanjing University of Science &Technology,Nanjing 210094,China;

  • 2.

    Hefei University,Hefei 230022,China

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    ZHANG Lin

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  • The negative effect of the mismatch between time delayed integration (TDI) CCD line scanning velocity and image motion on image quality is fully analyzed with phasemotion modulated transfer function (MTF). In order to verify the effect of the velocity mismatching on the image quality of 96stage TDICCD camera, based on the application environment, the simulative experiment and dynamic testing for the dynamic imaging of the TDICCD camera were conducted by utilizing the target with high contrast characteristic. The results show that within the range of Nyquist frequency, the effect of the synchronization error on the imaging quality can be basically eliminated during the processing of imaging so long as the synchronous error is strictly controlled in the range of ±2% and the imaging clock is in the continuous fourphase operating mode.
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