卫星轨道建模

说明：  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.)

说明：  验证LTE同步中使用PSS主同步序列进行频偏估计与使用CP进行频偏估计的性能对比。(Verify the performance comparison of frequency offset estimation using PSS main synchronization sequence and frequency offset estimation using CP in LTE synchronization.)

1、产生信号，两个实正弦信号的叠加，幅度分别为2、4、1、3；混入均值为0、方差为1的白噪声。采用自适应滤波器对其进行去噪。 2.产生信号，为两个实正弦信号的叠加，其幅度均为4，混入均值为0、方差为1的白噪声。采用有限脉冲响应法设计一个维纳滤波器估计信号 ，并求最小均方误差。 3.产生高斯分布的白噪声w(n)，自行给定一个5阶AR模型，让该白噪声通过这个AR模型，得到输出信号x(n），再估计x(n）的AR模型数，比较估计的结果和原来给定的AR模型的参数。(A signal to be generated, the superposition of two real sinusoidal signals, amplitude, respectively 2,4,1,3 mixed with mean 0 and variance 1 white noise. Noising using adaptive filter them. (2) generate signals as a superposition of two real sinusoidal signal whose amplitude was 4, mixed with mean 0 and variance 1 white noise. The finite impulse response method to design a Wiener filter estimate signal, and for the minimum mean square error. 3 Gaussian white noise generated w (n), given a five self-order AR model, so that the white noise through the AR model, get the output signal x (n), and then estimate x (n) the number of AR model, Compare the results and the original estimate given by the AR model parameters.)

说明：  Ho, K. C. , X. Lu , and L. Kovavisaruch . "Source Localization Using TDOA and FDOA Measurements in the Presence of Receiver Location Errors: Analysis and Solution." IEEE Transactions on Signal Processing, 2007, vlo.55, pp. 684-696)论文中传感器参数误差下的TDOA定位(Ho, K. C. , X. Lu , and L. Kovavisaruch . "Source Localization Using TDOA and FDOA Measurements in the Presence of Receiver Location Errors: Analysis and Solution." IEEE Transactions on Signal Processing, 2007, vlo.55, pp. 684-696))

说明：  用MATLAB软件，通过MTPA控制SVPWM从而控制电机(Using MATLAB software, SVPWM is controlled by MTPA to control the motor.)

适合初学gui的同学，快速入门，方便快捷( U5B9E u73B0 u57FA u672C u56FE u50CF u5904 u7406 u7684 u64CD u4F5C uFF0C u65B9 u4FBF u5FEB u6377)

层次分析法的matlab程序，层次分析法的matlab程序(AHP program matlab)

用fft算法求信号函数的相位或相位差，发现一些规律，对正弦、余弦函数而言，所得结果，有差异( a simulationg of using fft algorithm measuring phase and some problems)

仿真源码包括了多层异构蜂窝网络中基于齐次泊松点过程（HPPP）的建模方法，一篇介绍该模型的12年发表在IEEE trans的论文。以及传统六边形建模方法和信道增益矩阵的计算。(Simulation source code, including the multi-heterogeneous cellular networks based on homogeneous Poisson point process (HPPP) modeling method, a description of the model' s 12-year papers published in IEEE trans. And traditional modeling methods and hexagonal channel gain matrix calculation.)

说明：  离散的PSO算法解决0-1背包问题，比传统的PSO效果更好(Discrete PSO algorithm solves the 0-1 knapsack problem)