共焦成像算法中时延不确定对成像结果的影响

Effect on Imaging Result Due to the Time Delay Imprecision in Confocal Algorithm

探讨了在共焦成像算法中影响成像对比度的因素。首先指出,算法中时延估算的不准确是导致成像对比度下降的根本原因,并给出了共焦成像算法中时延误差与成像对比度之间的定量关系。作为对结论的验证,文中以在非均匀媒质中成像为例,探讨了媒质电磁参数的非均匀性与时延误差以及与成像对比度之间的关系。

In this paper, The factors that will impact the imaging contrast in confocal algorithm are discussed. At first, the inaccurate estimation of time delay is the ultimate reason that leads to the imaging contrast worse, the quantified relationship between time delay and imaging contrast is also given. To verify the conclusion, at last the relation between the degree of inhomogeneous, time delay and imaging contrast when imaging in random medium is illustrated.