matlab_GPS_simulation

使用Matlab/simulink做异步电机矢量控制系统的仿真模型。(Using Matlab/simulink to do induction motor vector control system simulation model.)

说明：  这个程序用于在图片中增加各种噪声，如高斯椒盐噪声, 加性或乘性等多种混合噪声，用于其它程序的测试。(This procedure is used to increase the variety of picture noise, such as salt and pepper Gaussian noise, additive or multiplicative noise, such as a mixture for testing other programs.)

说明：  ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2 种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本 思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列 的算法有较高的估计精度，但降纸了系统传输效率。(Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundational methods 。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency ofset are analyzed．Then it discusses their basic thoughts。implementing methods and simulation resuits． Finally。merits and demerits of every algorithm are supposed．It concludes that the cycling prefix— based algorithm has less complexity and less precision。and that the training sequence—based algorithm has better estimation performance at the cost of transmission efficiency．)

仿射变换,2D图形编程,图形图象,有matlab操作界面，可实现任意二维变换(Affine transformation, 2D graphics programming, graphics, images, has matlab interface can realize any two-dimensional transform)

说明：  可实现线性调频-巴克码混合信号的时域频域分析(Time domain and frequency domain analysis of LFM Barker code mixed signal)

地理信息系统、街道地图绘制、matlab程序、用matlab直接运行(Geographic information systems, street mapping, matlab program, run directly using matlab)

在关联成像中广泛存在的算法，涉及到DGI、GI等算法，这些算法均是线性算法，没有超分辨能力，但是抗造能力比较强，比较通用。(The widely existing algorithms in related imaging involve DGI, GI and other algorithms. These algorithms are linear algorithms without super-resolution, but they have relatively strong anti fabrication capability and are more common.)

该工程是有关CPFSK（连续相位调制）的完整工程。帧结构包含训练序列、前导码、同步码、数据长度等信息，使用正交调制方式产生CPFSK的信号，生成基带IQ数据。接收端包含帧同步、滤波、解算长度等算法。可实现任意长度字符串的无线发送与接收。工程十分完整喝强大，可直接用于各大SDR平台的验证。(The project is a complete project of CPFSK (continuous phase modulation). The frame structure contains training sequence, preamble, synchronization code, data length and other information, and uses orthogonal modulation to generate CPFSK signals and generate baseband IQ data. The receiver includes algorithms such as frame synchronization, filtering, and calculating length. It can realize wireless sending and receiving strings of arbitrary length. The project is complete and powerful, and can be directly applied to the verification of major SDR platforms.)

应用matlab，对功率运用博弈论的算法，实现功率的纳什均衡，能够运行。里面介绍了效用函数的运用。(Application of matlab, the use of game theory of power algorithm to achieve power Nash equilibrium, able to run. Which describes the use of utility functions.)

时频分布wigner-ville的仿真,可以通过改变信号,来看函数的分布情况(The time-frequency distribution of the wigner ville - simulation, can change the signal, function distribution)