ECG2

说明：  空间坐标的各种定义 空间坐标的各种转换 卫星两行轨道根数（TLE）格式定义(Various definitions of spatial coordinates Various transformations of spatial coordinates Definition of two line orbit elements (TLE) format for satellite)

JS树形菜单插件及示例，适合后台管理的树状展开菜单，点击节点即可展开对应的二级节点菜单。本树控菜单界面漂亮，加载速度快，使用方便，参考自带的示例便可实现一个实用的树形菜单功能。

protues 远见库 对照表。仿真必备。-protues vision library table. Simulation necessary.

说明：  直流微电网，风电、光伏、储能都包含，可运行(DC microgrid, including wind power, photovoltaic and energy storage, can be operated)

说明：  适合初学者，GitHub上开源代码，有数据，可运行结果(Suitable for beginners, open source code on GitHub, with data and results)

几种传统的语音增强方法，适合初学者，了解语音增强的处理。(Several traditional speech enhancement methods are suitable for beginners to understand the processing of speech enhancement.)

比较完善的CRC编码VerilogHDL描述-more perfect description of CRC coding VerilogHDL

登录界面的使用,包括下拉框的使用等，直观方便(Login use include combox its very easy and clear you can lean something very fast)

利用matlab仿真出载波、伪随机信号和导航电文，根据原理公式进行信号捕获和跟踪，通过实验验证了算法的可靠性。(Matlab was used to simulate carrier, pseudo-random signal and navigation message. The signal was captured and tracked according to the principle formula. The reliability of the algorithm was verified by experiments.)

说明：  1.此处主要探究的是嫦娥三号探测器在月球表面的软着陆问题。2.分析着陆轨道的特点，设计着陆轨道与各阶段的控制策略，对我国太空探测计划具有重要意义。3.此处主要采用微分动力学方程、最优控制策略等方法对问题进行分析和解决。(1. This paper mainly discusses the soft landing of chang'e-3 on the lunar surface. 2. It is of great significance to analyze the characteristics of the landing orbit, design the landing orbit and control strategy of each stage. 3. Differential dynamic equation and optimal control strategy are used to analyze and solve the problem.)