机构地区: 重庆大学光电工程学院
出 处: 《半导体光电》 2002年第2期132-135,共4页
摘 要: 采用光电探测阵列获取光谱信号时 ,由于光电探测阵列的离散性导致了无法准确地确定光谱峰值位置。对采用多项式拟合高斯光谱峰值定位误差进行了理论分析 ,提出了对光谱采样信号利用最小二乘法五次多项式拟合 ,并计算拟合函数前三次项一阶导数零交叉点的峰值定位。 In micro-spectrometer, photoelectronic detecting array is employed to obtain spectrum signal, while the discrete arrangement of its elements makes it impossible to detect the correct spectrum position. To overcome this problem, curve fitting is used to find the possible spectrum line between any two elements. In this paper, the spectrum position error caused by multinomial fitting is analyzed and the correspond computer stimulation shows a improved precision in spectrum line detection.
关 键 词: 光电探测阵列 光谱峰值定位 多项式拟合 最小二乘法
领 域: [电气工程]