jakes_simulator

Questions for digital system and microprocessor

用matlab语言描述了列车的牵引、制动等过程，给列车方向研究的伙伴们提供个参考(introduce the method of train traction and brake in the process of its running in the tunnel)

说明：  利用Matlab生成二维随机裂隙，控制裂隙密度、倾向、迹长分布函数、均值、标准差(Using MATLAB to generate two-dimensional stochastic fractures and control the density, tendency, trace length distribution function, mean and standard deviation of fractures)

说明：  利用FIR滤波器设计一个低通滤波器，能够分析到电力系统中的三次谐波，要求满足如下指标：截止频率150HZ，阻带衰减≥30db(FIR filter design using a low-pass filter, to analyze the power system in the third harmonic, the requirements to meet the following indicators: cut-off frequency 150HZ, stopband attenuation ≥ 30db)

针对基本无线传感器网络DV-Hop定位算法中，计算平均跳距时产生偏小误差的原因，提出了基于平均跳距修正的DV-Hop算法。改进算法中，引入信标节点个数比例、所有信标节点平均跳距的最大值以及所有信标节点平均跳距的平均值三个因子，并采用它们对平均跳距进行修正。通过Matlab软件对算法进行仿真验证，结果表明，改进后的 DV-Hop 算法有效降低了未知节点的定位误差，是一种可行的无线传感器网络节点定位解决方案。(DV-Hop localization algorithm for wireless sensor networks, we calculate the average hop distance small error of reasons, raised the DV-Hop algorithm based on the average hop distance correction. Improved algorithm, the proportion of the number of nodes, the introduction of beacons, the beacon node average maximum jump distance as well as all the beacon nodes average jump from the average of three factors, and their average hop distance correction. Matlab software simulation results show that the improved DV-Hop algorithm effectively reduce the unknown node positioning error, the solution is a viable wireless sensor network node positioning algorithm.)

使用Matlab对图片进行操作时，大量的单张图片不利于操作，此时需要将图片转化为.mat格式，.mat方便我们对数据的处理，使我们更加高效的利用数据。文章中的代码是以PIE数据集作为转换的原始数据，每张图片的名称是连续的数字，相同类别的图片张数相等且名称连续。(When using MATLAB to operate pictures, a large number of single pictures are not conducive to operation. At this time, we need to convert pictures into. mat format. mat is convenient for us to process data, so that we can use data more efficiently. The code in this article is PIE data set as the original data for conversion. The name of each picture is a continuous number. The number of pictures of the same category is equal and the name is continuous.)

说明：  moead源代码，包括三种分解方式，WS,TE,PBI(Moead source code, including three decomposition methods)

基于负熵的盲源分离源程序,对盲源分离领域属于最基本的程序(BSS based on negentropy)

包含心电数据的差分、小波、巴特沃思滤波器等滤波方法。(ECG data included differential, Wavelet, Butterworth filter, such as filtering method.)

Digital temperature sensor and thermal watchdog(Measures temperatures from –55 °C to+125 °C (–67 °F to+257 °F) – ±0.5 °C (typ) accuracy – ±2 °C (max) accuracy from –25 °C to+100 °C ■ Low operating current: 75 μA (typ) ■ No external components required ■ 2-wire I2C/SMBus-compatible serial interface – Selectable serial bus address allows connection of up to eight devices on the same bus)