spot-size error

基本解釋

The spot shape and size are determined to minish the sub-pixel centroiding error caused by the distortion of the point spread function due to the pixel sampling effect of the CMOS APS.
確定光斑形狀和大小的依據(jù)是，減小由於探測(cè)器像元對(duì)光斑能量分佈的採(cǎi)樣導(dǎo)致點(diǎn)擴(kuò)散函數(shù)變形，從而引起的利用亞像元技術(shù)求星像中心的計(jì)算誤差。
Based on the model of star point and error calculation mode, the deviation of sub-pixel centroiding due to the size of window, the variance of spot and the noises of APS are analyzed theoretically.
根據(jù)星點(diǎn)模型和質(zhì)心誤差計(jì)算模型量化分析了窗大小、星點(diǎn)模型方差、噪聲源對(duì)APS亞像素質(zhì)心定位的影響。