【中文文摘】核磁共振实验中某些非平稳效应 (如附加磁场的干扰 )会引起的谱峰相位畸变 ,这类相位畸变不能由常规的一阶或二阶线性相位校正来补偿。本文引入了一种“动态相位校正”方法 ,该方法利用连续小波变换直接从已知参考峰的连续时间—尺度表示中提取瞬时相位等有用信息 ,然后对全谱进行动态相位校正。理论表述和仿真分析表明 :该方法为获得高分辨 NMR谱提供一种新的有效的相位校正方式
【英文文摘】In NMR experiments,the peaks always have some phase distortions perturbed by some non stationary effects,such as additional magnetic fields.These phase distortions can not be removed by the routine first order or second order linear phase correction.In this paper,we introduce a new method called by dynamic phase correction.The distorted information is directly extracted from the known referenced peak at the time scale plane of continue wavelet transform;then apply"dynamic phase correction" to the full spectrum. Theoretic representations and simulation results show that the method provides a new efficient way to reconstruct such phase-distorted国家自然科学基金重点项目 ( 10 2 3 40 70 );; 福建省自然科学基金 ( A0 2 10 0 0 3 )资助项
