Computer Science ›› 2013, Vol. 40 ›› Issue (Z11): 150-152.

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Research on Algorithm of Revising Two Dimensions PSD

ZHANG Feng-qi,WANG Yong-sheng,ZHANG Bao-shang and ZHANG Qiu-zhi   

  • Online:2018-11-16 Published:2018-11-16

Abstract: Position sensitive detector is a photo electricity sensor which is sensitive to the position of signal.By calculating the weight of light,PSD can measure the position of light and output the analogy current signal.The non-liner has impact on the reliability of PSD.As a result of the influence of the marginal electrodes,serious non-linearity appears on the edge of PSD,which restricts the reliability and application.This paper took a research on how to revise the distortion.By studying the interpolation arithmetic,this paper put forward Biharmonic Spline interpor so as to revise the distortion point.Through simulation and analysis,the error can be limited to within 2.29um.It produces noticeably improvement compared with Nerve Network,which is satisfying.

Key words: PSD,Position detect,Distortion,Biharmonic spline interpolation

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