Using the analytic method of the anisotropic element, error estimate for the second order problem is obtained without the limitation of regularity conditions.
利用各向异性单元分析方法得到了二阶问题的误差估计，从而避开了正则性条件的限制。
In this paper, a new method of error estimate for the generalized difference method of second order elliptic problems on triangle grids is given.
文章给出了三角网格上二阶椭圆问题广义差分方法的一种新的误差估计方法。
According to the local situation, use the second method, take the slope factor as the emphasis point, the estimate result is more reliable.
根据当地的实际情况，利用方法二，以坡度因子为侧重点，估算结果更为可靠。
Aiming at time-frequency overlapped two-signals in single-channel, this paper proposed a method to estimate carrier frequency based on second-order cyclic cumulants.
针对单信道中时频重叠双信号的载波频率估计问题，提出一种基于二阶循环累积量的载波频率估计方法。
Aiming at time-frequency overlapped two-signals in single-channel, this paper proposed a method to estimate carrier frequency based on second-order cyclic cumulants.
针对单信道中时频重叠双信号的载波频率估计问题，提出一种基于二阶循环累积量的载波频率估计方法。
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