The acoustical wave equation is presented a serial spatial and time iterative equations and room acoustics field is simulated using finite difference time domain method.
时域有限差分法将声波基本方程表示为一个时间和空间的迭代方程组，实现对室内声场中低频段的模拟计算。
Based on single magnetic dipole model, the spatial filtering method of cardiac magnetic signal in the frequency domain was investigated.
本文利用心脏磁场单磁偶极子模型研究了心脏磁场强度检测信号的频域空间滤波法。
The basic theories and procedure of the MAP method and POCS method in spatial domain are summarized.
对MAP和POCS这两种空间域方法进行研究，总结了其基本思想与算法流程。
To avoid calculating the time-consuming Sommerfeld's integrals, the discrete complex image method (DCIM) is employed to obtain spatial domain closed-form Greens function for planar-layered media.
使用离散复镜像方法(DCIM)快速得到平面分层介质的空间域的闭式格林函数，避免了费时的索末菲尔德积分。
The watermark was embedded in the wavelet domain using the mean quantization method. This method can be used to detect the distortion both in spatial and frequency domain.
这种算法是采用了均值量化的方法，把数字水印嵌入图像的离散小波域，可以检测在空间域和频率域的图像失真。
Comparison with the spatial processing method using fractional lower order statistics, the proposed algorithm provides more precise DOA estimates by using the ambiguity domain information of signals.
与基于分数低阶统计量的空域处理方法相比，该文提出的算法利用了信号在模糊域中的信息，提高了算法的估计精度。
The image de-noising method basically may divide into two kinds: transform domain de-noising and spatial domain de-noising.
图像的去噪方法基本上可分为变换域法和空间域法两大类。
Compared with existing spatial domain optimization methods, the new spatial spectrum optimization method can effectively improve the practical performance of DOE and save computing time.
与已有空间域优化方法的对比表明，在元件实用效果方面，空间频域优化设计方法优于空域方法。
A new method and an experimental unit for realizing phase shift interferometry by means of spatial domain sampling is proposed.
提出了一种利用空域采样实现相移干涉计量的新方法和实验演示装置。
Operational modal analysis method of bridge was built based on frequency domain and spatial domain decomposition.
利用频域-空间域分解法，建立桥梁运行模态识别方法。
As a nonlinear method, dither modulation has been applied to spatial domain watermarking embedding into still images.
扰动调制是一种非线性水印技术，已应用于数字图像。
To resolve the problems existed in the estimation of motion in video sequences, a novel method combining gray projection in spatial domain and phase correlation in frequency domain is proposed.
针对视频图像运动检测问题，提出一种空域灰度投影和频域相位相关相结合的亚像素配准方法。
This approach USES the GPOF method, which is more robust and much faster, in the derivation of the spatial-domain Green's functions.
该方法利用GPOF方法，大大提高了空域格林函数的计算效率。
Then discrete complex images method (DCIM) is applied to obtain spatial domain Green's functions, which enhance computing efficiency.
提出了二级离散复镜像法(DCIM)与表面波处理相结合的方法对空域格林函数进行计算。
Then discrete complex images method (DCIM) is applied to obtain spatial domain Green's functions, which enhance computing efficiency.
提出了二级离散复镜像法(DCIM)与表面波处理相结合的方法对空域格林函数进行计算。
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