摘要
在相同信噪比的情况下,通过数值仿真对夏克-哈特曼波前传感器阵列光斑的4种质心探测算法进行质心探测误差对比.仿真结果表明,强加权质心算法具有较好的适用性,该算法在信噪比小于5时,质心探测误差低于0.5像素.在对阵列光斑进行质心探测时,同时考虑质心探测误差和探测速率,有效提高了质心探测的准确性和快速性.
The centroid detection errors of four methods of centroid detection algorithm about Shack-Hartmann array spots were compared at the same SNR, during which not only the centroid detection error but also the velocity of detection was taken into account. The experiment results indicate that IWCa has less detection error （ CEE 〈 0.5 ） although the SNR is lower than 5 and the velocity is also great. In consideration of centroid detection error and detection rate, centroid detection accuracy and rapidity were effectively improved.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2010年第6期1013-1017,共5页
Journal of Jilin University:Science Edition
基金
国家自然科学基金(批准号:60677009)
国防科工局基础预研项目(批准号:A3620080230)
关键词
夏克-哈特曼波前传感器
质心算法
质心探测误差
信噪比
时间复杂度
Shack-Hartmann wavefront sensor
centroid algorithm
centroid detection error
signal noise ratio
time complexity
