卫星轨道建模

Phase Modulation and Demodulation(Phase Modulation and demodulation)

现代通信系统， 基于MATLAB的仿真，利用MATLAB学习通信原理(Contemporary Communication Systems Using MATLAB)

可以方便的进行算例分析，IEEE case300(It is convenient to carry out an example analysis)

说明：  包括最长、最短欧式距离法、重心法（标准欧式、平方欧式、精度加权）、平均法、权重法等等(Including the longest and shortest Euclidean distance method, center of gravity method (standard Euclidean, square Euclidean, precision weighting), average method, weight method, etc)

对于网络流量的分类程序，作者分析了10种常用的网络流量，并通过端口，以及流统计特征进行分类，效果不错。(Procedures for the classification of network traffic, the authors analyzed 10 kinds of commonly used network traffic, and through the port, and the statistical characteristics of stream classification, the effect is good.)

说明：  应用labview实现信号的改进经验模态分解，对初学者有所帮助(Labview is applied to realize the improved empirical mode decomposition of signal, which is helpful for beginners)

定位功能：提供GPS、基站、Wi-Fi等多种定位方式，适用于室内、外多种定位场景； 基础地图：包括基础地图、卫星图、路况图和各种覆盖物，及与地图相关的操作、事件监听； 导航功能：提供语音播报、路线规划和线路导航的能力，帮助开发者实现导航业务需求； 检索功能：包括POI检索，公交信息查询，路线规划，地理编码查询，在线建议检索，短串分享等； LBS云检索：包括LBS云检索（周边、区域、城市内、详情）； 计算工具：包括距离计算、坐标转换、调起百度地图导航等功能； 全景图功能：包括检索、展示全景图，与全景图进行交互及在全景图内添加覆盖物的能力；(Location: Provides GPS, base stations, Wi-Fi and other various positioning methods, suitable for indoor and outdoor various positioning scenarios Basemap: includes basic maps, satellite maps, road maps and a variety of covers, and related map operations, event listeners Navigation functions: to provide voice broadcast, route planning and route navigation capabilities to help developers navigate the business needs Search functions include: POI search, public transportation information inquiry, route planning, geocoding queries, suggestions online retri , sharing a short string LBS cloud retri include: LBS Cloud Retri (perimeter, area, within the city, details) Calculation tools include: distance calculation, coordinate conversion, transfer Baidu map navigation and other functions Panorama features include: search, display panoramas, to interact with the panorama and add the ability to cover in the panorama )

说明：  转：3维避障RRT算法的matlab实现(Matlab implementation of 3D obstacle avoidance RRT algorithm)

matlab程序包。用于格兰杰因果分析，分析数据时，直接带入数据即可。(Matlab package. Granger causal analysis)

gps定位程序 测试通过，可以直接拿来用 GPS卫星提供了P码（精码）和C/A码（粗码）两种定位服务。P码为军方服务，定位精度达到3米；C/A码对社会开放，定位精度为14米。出于自身安全的考虑，美国先后实施了SA和AS政策。SA政策在C/A码中人为引入了误差，使定位精度下降到100米；AS政策则对P码实行加密。 由于GPS对社会开放，因此各类接收机、测量设备如雨后春笋般涌现，并广泛应用于各行各业，彻底改变了传统的定位导航方式.(gps positioning program testing by direct use of them GPS satellites provide two kinds of location-based services in the P-code (precise code) and the C/A code (coarse code). P code for military service, positioning accuracy of 3 meters C/A code of the open society, positioning accuracy of 14 meters. For their own security reasons, the United States has implemented a policy of SA and AS. SA policy is artificially introduced in the C/A code of the error, so that the positioning accuracy down to 100 meters AS policy is implemented in P-code encryption. GPS open society, the various types of receivers, measuring equipment have sprung up, and are widely used in all walks of life, completely changed the traditional positioning and navigation.)