About software, searching algorithm has been optimized. The focus evaluation function and the choice of the focusing window have also been described.
在软件上，主要是搜索算法的优化，还有对焦评价函数和对焦窗口的选择，以及相对于硬件上优化后所采取的一些改进。
According to the symmetry of the triangle window function and the recurrence relations of triangle filter, the practical algorithm of the approximated Gaussian filter is obtained.
根据三角窗函数的对称性和三角滤波器的递归性，给出了高斯滤波器的实用逼近算法。
By simplifying the objective function of maximum likelihood estimation, the algorithm can realize sequence synchronization and sequence estimation via adaptive iteration and wide window.
通过简化最大似然估计目标函数，提出了用自适应迭代法并结合宽窗口法来实现序列同步和序列估计。
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