搜索资源列表
Wave-equation-forward-modeling
- 1、参数初始化； 2、形成边界削波数据； 3、波场初始化； 4、Zmax层波场延拓到深度Zmax-1； 5、Zi+1层波场延拓到深度Zi； 6、重复5，从Iz Nz-1开始，直到Iz 1，得测线上的频率—空间域波场； 7、频率-空间域波场对频率做反傅里叶变换，得时间-空间波场； -1, parameter initialization 2, the formation of boundary clipping data 3, wave field init
Discrete-time-signal
- 离散时间信号基本运算，包括序列相加相减、序列位移、序列翻转、序列周期延拓-Discrete-time signal basic operations, including the sequence of addition and subtraction, shift sequence, sequence inversion sequence cycle extension
wavelet_test
- 采用db4小波，对输入信号进行2阶分解和重构。采用了对称延拓方式。- The db4 wavelet is used to decompose and reconstruct the input signal. Using a symmetric extension.
boundary_conditions_fliplr
- 对经验模态分解的端点效应进行处理，本程序用镜像延拓方法-The empirical mode decomposition of the endpoint effect processing, the program uses the image extension method
TSVD_DownContinuation
- 位场向下延拓的泰勒级数方法，利用拉普拉斯方程的特点，计算空间域水平二阶差分来替代垂直方向上的二阶差分-Potential field downward continuation of Taylor series method, the advantage of the characteristics of Laplace equation, a second order differential spatial domain levels instead of second order diff
LMDP6Data-expansion
- LMD算法利用极值平均、边界局部特征尺度延拓、HDJ极值延拓法、基于ISBM延拓、平行延拓法等对数据拓展，降低端点效应。-The LMD algorithm uses the extreme value average, the boundary local characteristic scale extension, the HDJ extreme value extension method, based on the ISBM extension, the parallel extens
YANTUO
- 该程序使用过的是一维线性插值法，并加端点延拓，端点延拓所用的方法是镜像延拓，内涵注释-The program uses a one-dimensional linear interpolation method, and add end extension, endpoint extension method used is the mirror extension, the connotation of the Notes
matchwave_pipei
- MATLAB实现EMD分析振动信号时的波形匹配延拓，此方法可以一定程度上降低希尔伯特黄变换引起的端点效应-MATLAB to achieve EMD analysis of vibration signals when the waveform matching extension, this method can be reduced to some extent, the Hilbert yellow transform caused by the endpoint effect
flip
- MATLAB实现EMD分析振动信号时的镜像对称延拓，此方法可以一定程度上降低HHT引起的端点效应-MATLAB to achieve EMD analysis of vibration signals when the mirror symmetry extension, this method can be reduced to some extent HHT caused by the end effect
emd-boundary
- 通过改进镜像延拓法和波形匹配法有效抑制了emd法的端点效应，把改进的代码分享给大家。-By improving the mirror image extension method and the waveform matching method, the endpoint effect of EMD method is effectively suppressed, and the improved code is shared with everyone.
trthsubgroup
- caiyang 演示采样定理,时域采样,频谱周期延拓 不错的源码-Caiyang demo sampling theorem, the time domain sampling, spectrum cycle continuation good source
计算二度异常
- 利用剖面上的异常值计算二度异常向上延拓，matlab，实用(By using the abnormal values on the section, the abnormal upward continuation of two degrees is calculated, and MATLAB is practical)
oolrce
- caiyang 演示采样定理,时域采样,频谱周期延拓 不错的源码(Caiyang demo sampling theorem, the time domain sampling, spectrum cycle continuation good source)
端点处理
- EMD方法中的几种端点处理方法，如端点延拓等(Several endpoint processing methods, such as endpoint extension, in the EMD method)
emd
- 采用镜像延拓方法以解决EMD分解过程中存在的端点效应问题，经过实际测试，较传统EMD方法可有效解决端点效应问题。(The mirror extension method is used to solve the end effect problem in the EMD decomposition process. After practical testing, the endpoint effect problem can be effectively solved by the tradi
实验五：信号抽样与恢复
- 信号的抽样和恢复，若 是带限信号，带宽为 , 经采样后的频谱 就是将 的频谱 在频率轴上以采样频率 为间隔进行周期延拓。因此，当 时，不会发生频率混叠；而当 < 时将发生频率混叠。(The signal sampling and recovery)
emd
- EMD分解程序（包括详细的文字注释），包括有边界延拓等。(EMD decomposing program (including text annotations))
lianxuchaoliu
- 连续潮流：又称为延拓潮流，是电力系统电压稳定性分析的有力工具，它通过在常规潮流基础上引入一个负荷增长系数来克服雅可比矩阵奇异，从而克服接近稳定极限运行状态时的收敛问题，解决了常规潮流在崩溃点外无解和在崩溃点附近不能可靠收敛的问题。连续潮流法是从初始稳定工作点开始，随着负荷缓慢变化，沿相应的PV曲线对下一工作点进行预估、校正，直至勾勒出完整的PV曲线。(Continuous flow: also known as the continuation of the trend, is a powerf
poumian
- 实现重力剖面数据延拓等程序的实现，还包含例子数据可直接使用(The implementation of gravity profile data extension and other programs, including examples, data can be directly used.)
pingmian
- 实现重力平面数据延拓等程序的实现，还包含例子数据可直接使用(The implementation of gravity plane data extension and other programs, including examples, data can be directly used.)