ModalAnalysis

离散点生成等高线的程序，基于方格网数字地形模型(Discrete points of the program to generate contour lines, grid-based DTM)

利用LABview软件的频谱分析功能实现使用FFT分析信号幅度谱和相位谱，(Analysis of Signal Amplitude Spectrum and Phase Spectrum by FFT)

多次改进的seis系列传统正演源程序seis88，仅供参考。(for ray tracing use.)

Morphological transformations are some simple operations based on the image shape. It is normally performed on binary images. It needs two inputs, one is our original image, second one is called structuring element or kernel which decides the nature of operation.

PD里面的4B5B编码，欢迎使用~~~~~~~~~~~~~~~~~(4B5B code in PD3.0 or USB3.0, welcome to use~~~~~~~~~~~~~~)

STM32F4与ADXL355通过SPI通信。(STM32F4 and ADXL355 via SPI communication.)

说明：  采用频移调制的方式产生RGPO干扰，并定量分析它对LFM体制雷达的影响效应。按照脉冲重复周期为间隔，完成了动态的RGPO干扰演示，对从事雷达电子战领域研究的技术人员有一定的参考。(RGPO jamming is produced by frequency shift modulation, and its effect on LFM radar is analyzed quantitatively. According to the interval of pulse repetition period, the dynamic RGPO jamming demonstration is completed, which has certain reference for the technical personnel engaged in the radar electronic warfare field.)

GPRSim.net is a basic GPR time domain simulation tool. It is partially based in the transmission line model and allows up to ten layers to be simulated with frequencies ranging from 200 to 2000 MHz. It can be used to try out different real world survey scenarios and understand how different center frequency antennas could perform, as well as getting an idea of how the ground penetrating radar A-scan might look like in the given conditions.

说明：  采用泰森多边形法根据区域内雨量站经纬度计算各站点权重，以此权重与各站点雨量相乘后累加得到面平均雨量(The Tyson polygon method is used to calculate the weight of each station according to the latitude and longitude of the rainfall station in the area, and the weight is multiplied by the rainfall of each station to accumulate to obtain the surface average rainfall)

用弹簧单元模拟钢筋和混凝土的滑移，模拟非线性接触问题。(De veereenheid wordt gebruikt om de slip van staal en beton te simuleren om niet-lineaire contactproblemen te simuleren.)