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4 November 2010 Non-equal spacing CMOS sensor impact on response between even and odd pixels
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Abstract
With the self-developing CMOS imaging sensors in the instrument Focal Plane Assembly (FPA), there is flexibility in the trade-off for optimal specifications of CMOS sensor for systematic study. The criteria considered for the optimization are MTF and SNR, the CMOS imaging sensor considered is with TDI (time delay integration) feature. Among the specifications, fill factor is a key item. It affect not only the window effect in FPA MTF (static), but also the smearing effect in dynamic MTF, especially in satellite along track direction. Considering different fill factors, mirror-type and non-mirror-type pixel layout were studied for estimating the system MTF, another concern from image user point of view is mirror type pixel layout may cause different response between even and odd pixels. This work is to present the analysis results based on the construction of the non-equal spacing signal via Whittaker -Shannon interpolation formula. Further to present the analysis results about fill factor and stage number of TDI CMOS sensor. The result can function as a practice of FPA design specification.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cynthia Liu and Nai-Yu Chen "Non-equal spacing CMOS sensor impact on response between even and odd pixels", Proc. SPIE 7862, Earth Observing Missions and Sensors: Development, Implementation, and Characterization, 78620F (4 November 2010); https://doi.org/10.1117/12.869462
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