13 October 2010 Design of CMOS sensor fill factor for optimal MTF and SNR
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Abstract
With the self-developing CMOS sensors in the instrument Focal Plane Assembly, there is flexibility in the trade-off for optimal specifications of CMOS sensor. Among the specifications, fill factor is a key item. It affects not only the window effect in FPA MTF (static), but also the smearing effect in dynamic MTF. Different rectangular shape of the pixel active area was studied for estimating the cross-track and along-track MTF. For TDI sensor, higher fill factor leads to less stage number or higher SNR, but less system MTF value; while less TDI stage number will improve the system MTF due to satellite pointing stability. This work is to present the analysis results about fill factor and stage number of TDI CMOS sensor.
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Cynthia Liu, Cynthia Liu, Jer Lin, Jer Lin, Michael Tseng, Michael Tseng, } "Design of CMOS sensor fill factor for optimal MTF and SNR", Proc. SPIE 7826, Sensors, Systems, and Next-Generation Satellites XIV, 78261N (13 October 2010); doi: 10.1117/12.864521; https://doi.org/10.1117/12.864521
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