pid

for gps tracking acquision satellite position and velocity finding

Beam propagation method code in Matlab.

An implementation of Unscented Kalman Filter for nonlinear state estimation. (Nonlinear state estimation is a challenge problem. The well-known Kalman Filter is only suitable for linear systems. The Extended Kalman Filter (EKF) has become a standarded formulation for nonlinear state estimation. However, it may cause significant error for highly nonlinear systems because of the propagation of uncertainty through the nonlinear system. The Unscented Kalman Filter (UKF) is a novel development in the field. The idea is to produce several sampling points (Sigma points) around the current state estimate based on its covariance. Then, propagating these points through the nonlinear map to get more accurate estimation of the mean and covariance of the mapping results. In this way, it avoids the need to calculate the Jacobian, hence incurs only the similar computation load as the EKF. For tutorial purpose, this code implements a simplified version of UKF formulation, where we assume both the process and measurement noises are additive to avoid augment of state and a)

说明：  在matlab环境下，对无线通信系统的发射机和接收机信号传输进行仿真(In the matlab environment, on wireless communication system transmitter and receiver signal transmission simulation)

多维粒子群优化算法，用于求解多维函数的优化问题。(Multidimensional PSO algorithm for solving optimization problems of multidimensional function.)

卡尔曼滤波航迹预测，程序使用UKF算法，使用简练的语言实现了航迹的滤波以及预测。(Kalman filter forecast track, the program uses UKF algorithm, using concise language to implement the track filtering and prediction.)

本书由基础知识和应用两大部分组成，基础知识详细介绍了MATLAB基础准备与入门、MATLAB的基本使用方法、数组和数组运算、字符串单元数组和结构、数值计算功能、符号运算、数据和函数的可视化、MATLAB程序设计、图形用户界面设计、Simulink仿真基础；在应用方面，介绍了MATLAB在信号与系统、数字信号处理和通信原理中的应用等内容。本书在介绍方式上使用了大量图片、例子，具有较好的操作指导作用，通过实例帮助读者加深理解。(Benshu basic knowledge and applied by the two major components, introduces the basics of preparation and entry based on MATLAB, MATLAB s basic use, arrays and array operations, array of string units and structures, numerical calculations, symbolic computation, data, and visual function, MATLAB programming, graphical user interface design, Simulink based simulation In the application, describes a MATLAB in signal and systems, digital signal processing and communication theory in the application of content. This book describes the way in the use of a large number of pictures, examples, and has good operating guide, an example to help readers better understanding.)

方便快捷的GMSK 使用matlab的simulink功能来完成仿真和模拟 很好用(Convenient for GMSK using matlab simulink function to complete the simulation and modeling good)

仿真psk信道的一篇，PDF格式，内有源代码，完美运行，不信可以试试哦(A channel simulation psk, PDF format, the source code, the perfect run, do not believe you can try oh)

Viterbi Decoder Matlab file