Description: 1、Rayleigh_Doppler_singlePath.m
产生单径Rayleigh衰落，采用了6种方法并进行了比较，推荐使用第6种方法；
2、Rayleigh_Doppler_multiPath.m
根据多条径的延时和强度，产生频率选择性衰落；
在单径和多径两个程序中，均提供了其功率谱的输出代码； -1, Rayleigh_Doppler_singlePath.m Single Path Rayleigh fading generated using the six kinds of methods and compared recommend using the first six kinds of methods 2, Rayleigh_Doppler_multiPath.m Drive under a number of delay and intensity, resulting in frequency selective fading in single-track and multi-path two procedures, which provide the power spectrum of the output code Platform: |
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Author:george |
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Description: (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因；
(2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理；
(3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。
-(1) in certain wireless channel, the Doppler frequency shift will be caused by wireless channel output signal aliasing. Please describe the resulting aliasing of a variety of reasons (2) wireless channel Doppler spectrum there is a classical spectrum (classic spectrum), please explain such a spectral shape of the mechanism (3) Please use Simulink tools for writing code ( S-Function mode), resulting in a single Path Rayleigh channel, the Doppler spectrum for the classical spectrum, including mobile rate of 120km/h. And please answer: prove that they used computer-generated classical spectrum is correct possible ways. Platform: |
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Author:haohao |
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Description: 这是用matlab实现的多站定位系统性能仿真的源程序，希望对研究定位的人有所帮助！资源共享，也希望有关
于无源定位、多普勒信息提取方面代码的人共享一下，一起进步！-This is achieved using matlab multi-station positioning system performance simulation of the source, I hope the study will help position the person! The sharing of resources, but also on the passive positioning, Doppler information extraction area to share some code with the progress! Platform: |
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Author:袁焕江 |
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Description: 2. 关于无线信道的多普勒谱，请回答以下问题：
(1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因；
(2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理；
(3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。
-On the wireless channel of the Doppler spectrum, please answer the following questions: (1) In some radio channels, the Doppler frequency shift will cause the output signal of the wireless channel aliasing. Please describe the aliasing produced a variety of reasons (2) wireless channel in the Doppler spectrum has a classical spectrum (classic spectrum), please explain the mechanism of produce such spectral shape (3), please use the Simulink tool to write code ( S-Function mode), resulting in a single-path Rayleigh channel, the Doppler spectrum for the classical spectrum, including mobile rate of 120km/h. And requested the answer: that they used computer-generated classical spectrum is the right possible way. Platform: |
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Author:Helen |
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Description: 国外大学的讲义，对学习这2种效应基础理解很有帮助，pdf文档中有matalb代码带你一步一步的学习，很值得推荐。-Multipath and Doppler Effects and Models,very useful document of understanding the basic principle with its matlab code . Platform: |
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Author:shilei |
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Description: GPS C/A码捕获 用的是fft频域的搜索 有C/A码产生和C/A码数字化子程序，模拟卫星信号的捕获算法和过程，未考虑多普勒频移-GPS C/A code acquisition in frequency domain using the fft search with C/A code generation and C/A code number of subroutines, analog satellite signal acquisition method and process, without considering the Doppler shift Platform: |
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Author:铁头 |
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Description: Simulink工具编写代码(MATLAB Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h，含理论描述多普勒经典谱-Simulink tools for writing code (MATLAB Function mode) to produce a single path Rayleigh channel, the Doppler spectrum for the classical spectrum, where mobile speed of 120km/h, with the classical theoretical description of Doppler spectrum Platform: |
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Author:ailiu |
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Description: 用MATLAB在产生的观测数据中捕获其中PRN 号码为“5”C/A 码。
（1） 观测数据应该有一定的多普勒频偏D f（-10kHz〈D f〈+10kHz）；
（2） 加入高斯白噪声，使其信噪比为-20dB；
（3） 捕获成功后，应给出捕获标志，并给出估计的频偏和码偏值。-Generated by MATLAB in which observed data capture PRN number is " 5" C/A code. (1) there should be some observations of Doppler shift D f (-10kHz < D f < +10 kHz) (2) by adding Gaussian white noise, so SNR is-20dB (3) capture success After the capture flag to be given, and given the estimated frequency offset and code bias values. Platform: |
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Author:李伟 |
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Description: 本文主要利用matlab编程工具对直接序列扩频通信的捕获过程进行仿真。仿真主要基于滑动相关法的有关理论,先讨论扩频仿真中起着重要作用的m序列的生成问题,尔后讨论调制信号的产生,然后在信号的捕获中分步讨论,先对捕获的流程进行简单的仿真,再依次加入噪声和多普勒频移后进行捕获仿真-In this paper, using matlab programming tools for direct sequence spread spectrum communication capture process simulation. Simulation of the sliding correlation method is based on the theory, first discuss the simulation plays an important role in spreading the m sequence generation problem, the modulation signal generation and later discussed, and the signal captured by stepping discussion processes the captured first simple simulation, and then followed by adding noise and Doppler frequency shift after the capture simulation Platform: |
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Author:sunnysnowhi |
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Description: 多径和多普勒的讲义，文件内含matlab源代码，对于了解多径和多普勒效应很有帮助。-Multipath and Doppler handouts, matlab file containing the source code for understanding the effect of multipath and Doppler helpful. Platform: |
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Author: |
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Description: 发射机接收程序，与SIMULINK实现交互，实现了信号的同步提取，多普勒频移估计和解旋转。-Transmitter signal receiving program, a matlab code with SIMULINK interaction, achieving signal synchronization, Doppler shift estimate and reconciliation signal rotation. Platform: |
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Author:Penrose Wang |
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