GMSD

说明：  digsilent simulation 9 bus ieee

bpsk调制仿真，可直接用 1、数字调制方法 数字调制就是把数字基带信号的频谱搬移到高频处，形成适合在信道中传输的带通信号。基本的数字调制方式有振幅键控（ASK）、频移键控（FSK）、绝对相移键控（PSK）、相对（差分）相移键控（DPSK）。在接收端可以采用想干解调或非相干解调还原数字基带信号。 数字信号的传输方式分为基带传输和带通传输。然而，实际中的大多数信道（如）无线信道具有丰富的低频分量。为了使数字信号在带通信道中传输，必须用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。(1, digital modulation method Digital modulation is the transfer of the spectrum of a digital baseband signal to a high frequency to form a bandpass signal suitable for transmission in the channel. The basic digital modulation methods are amplitude keying (ASK), frequency shift keying (FSK), absolute phase shift keying (PSK), and relative (differential) phase shift keying (DPSK). At the receiving end, the digital baseband signal can be restored by using dry demodulation or non-coherent demodulation. Digital signal transmission methods are divided into baseband transmission and bandpass transmission. However, most channels in practice, such as wireless channels, have rich low frequency components. In order for a digital signal to be transmitted in a band channel, the carrier must be modulated with a digital baseband signal to match the signal to the characteristics of the channel.)

一个关于GPS的工具箱，用于仿真卫星信号产生、信号传播环境、接收机测量和数据处理流程(The Toolbox about GPS allows to simulate the satellites, the propagation environment, the receiver measurements and the data processing.)

说明：  Elman网络预测上证股市开盘价(Elman network forecasts the opening price of Shanghai Stock Market)

codes different spectrum sensing techniques

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.)

说明：  可以得到两层异构蜂窝网络的覆盖率，以及单层异构蜂窝网络的覆盖率，并将实验结果与理论结果进行对比(The coverage of two-layer heterogeneous cellular network and single-layer heterogeneous cellular network can be obtained. The experimental results are compared with the theoretical results.)

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.)

说明：  各类神经网络代码，可以用于MATLAB初学者使用(Various kinds of neural network codes can be used for beginners in MATLAB)

曲线数据压缩是计算机图形学、计算机自动制图和地理信息系统( GIS) 等学科理论与方法研究的一个重要问题,其实质是一个信息压缩问题.RDP 算法是应用最为广泛的一种,由于容易编程实现且压缩结果较好, GIS 界许多著名商业软件公司(如Intergrap h ,ESRI ,LaserScan) 都把此算法作为其制图系统中一种曲线数据压缩的标准算法.(the well-known Ramer-Douglas-Peucker (RDP) algorithm for polyline data compression)