LJ_to_Morse

说明：  经典无线链路预算模型，预测了在自由空间中由地形的非规则性造成的中值传输衰落。该模型适用于频段为20MHz至40GHz、路径长度为1km至2000km的情况。对于给定的传输路径，该计算机程序通过频率、路径长度、极化方向、天线高度、表面绕射率、地面有效半径和地面导电常数等参数可以确定传输损耗的大小。(Classic wireless link budget model, forecasts the in free space caused by terrain of regularity in the value decline.The model is suitable for the frequency of 20 MHZ to 40 GHZ, path length of 1 km to 2000 km.For a given transmission path, this a computer program can calculate the value of the transmission loss by frequency, path length, polarization direction, antenna height, surface diffraction, effective radius of the ground and ground conductivity constant parameters and so on.)

大规模MIMO信道容量分析，主要分析了BS和MS天线数不断增大时，对信道容量的影响。(The analysis to Massive MIMO channel capacity as the antennas of BS and MS grow up. )

设置地图投影的小程序，学习GIS编程有用(A simple program for setting GIS map projections, good for study map projection)

中国沙漠以及黄土分布图，矢量(shp)格式。(The distribution map of desert and loess in China (vector) (SHP).)

说明：  包含的是shp格式海图。完整的海图包括了数据信息。(Shp format that contains the chart. Complete chart, including the data.)

说明：  GA-BPNN实例，包含样本数据和函数代码，测试可运行。(example of GA-BPNN, data and matlab codes are included.)

地理信息系统设计ArcView的二次开发.ArcView软件是一套辅助用户组织、维护、显示、分析和传播地图与空间信息的传输工具，它为用户提供了进行空间决策的框架，空间处理能力及建立数学模型 (geographic information system design ArcView the secondary development. ArcView software is a supplement to household organization, and maintenance, display, analysis and dissemination of maps and spatial information transmission tool, It provides users with a space policy framework, the capacity and space mathematical model)

说明：  采用改进的Euler方法求解数值解，给出了仿真源代码。(The improved Euler method is used to solve the numerical solution, and the simulation source code is given.)

针对影响目标跟踪性能的关键因素——机动目标模型及其状态转移方程，探讨了基于Singer统计模型的卡尔曼滤波算法实现。(Aiming at the key factor that affects the performance of target tracking maneuvering target model and its state transition equation, the Calman filtering algorithm based on Singer statistical model is discussed.)

排列熵程序和实例，用于排列熵的学习和程序调试(Arrangement of entropy procedures and examples for the entropy of the learning and debugging process)