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[GPS develop] TurboMIMO DL : 0: 用Matlab仿真turbocode的算法，即编码结构-using Matlab turbocode algorithm, namely coding structure
Date : 2025-12-24 Size : 41kb User : fengshengwei
[GPS develop] acquisition DL : 0: This GPS Acquisition..by Matlab, this file performs cold start acquisition on the collected "data". It searches for GPS signals of all satellites, which are listed in field "acqSatelliteList" in the settings structure. Function saves code phase and frequency of the detected signals in the "acqResults" structure.-This is GPS Acquisition .. by Matlab, this file performs cold start acquisition on the collected " data" . It searches for GPS signals of all satellites, which are listed in field " acqSatelliteList" in the settings structure. Function saves code phase and frequency of the detected signals in the " acqResults" structure.
Date : 2025-12-24 Size : 3kb User : lohchunling
[GPS develop] acquisition-trial DL : 0: This GPS Matlab acquisition code. Function performs cold start acquisition on the collected "data". It searches for GPS signals of all satellites, which are listed in field "acqSatelliteList" in the settings structure. Function saves code phase and frequency of the detected signals in the "acqResults" structure.-This is GPS Matlab acquisition code. Function performs cold start acquisition on the collected " data" . It searches for GPS signals of all satellites, which are listed in field " acqSatelliteList" in the settings structure. Function saves code phase and frequency of the detected signals in the " acqResults" structure.
Date : 2025-12-24 Size : 2kb User : Nelson Loh
[GPS develop] nmea.m DL : 0: NMEALINEREAD reads an NMEA sentence into a MATLAB structure array
Date : 2025-12-24 Size : 2kb User : vijay
[GPS develop] paper04 DL : 0: Presently FFT usage in GPS receivers has been a topic of extensive study and many improved FFT-based acquisition methods with averaging correlation technique also have emerged. Although averaging arithmetic can reduce the instant processing points of FFT/IFFT, their noise performance is not promising. In this paper a novel compress-sampling algorithm for FFT-base GPS signal acquisition method is proposed. It not only diminishes the size of FFT/IFFT core but also enhances the noise immunity of receiver with its “redundancy” structure. Simulation results of Matlab testify that the computational complexity of the novel algorithm has been efficiently suppressed to only 0.93 over the 2D search method in time domain. At the same time the lower amplitude threshold obtained from the novel method gets a lower false alarm probability comparing with the direct DFT algorithm with no compression. The noise immunity is enhanced-Presently FFT usage in GPS receivers has been a topic of extensive study and many improved FFT-based acquisition methods with averaging correlation technique also have emerged. Although averaging arithmetic can reduce the instant processing points of FFT/IFFT, their noise performance is not promising. In this paper a novel compress-sampling algorithm for FFT-base GPS signal acquisition method is proposed. It not only diminishes the size of FFT/IFFT core but also enhances the noise immunity of receiver with its “redundancy” structure. Simulation results of Matlab testify that the computational complexity of the novel algorithm has been efficiently suppressed to only 0.93 over the 2D search method in time domain. At the same time the lower amplitude threshold obtained from the novel method gets a lower false alarm probability comparing with the direct DFT algorithm with no compression. The noise immunity is enhanced
Date : 2025-12-24 Size : 249kb User : zohreh
[GPS develop] paper03 DL : 0: Presently FFT usage in GPS receivers has been a topic of extensive study and many improved FFT-based acquisition methods with averaging correlation technique also have emerged. Although averaging arithmetic can reduce the instant processing points of FFT/IFFT, their noise performance is not promising. In this paper a novel compress-sampling algorithm for FFT-base GPS signal acquisition method is proposed. It not only diminishes the size of FFT/IFFT core but also enhances the noise immunity of receiver with its “redundancy” structure. Simulation results of Matlab testify that the computational complexity of the novel algorithm has been efficiently suppressed to only 0.93 over the 2D search method in time domain. At the same time the lower amplitude threshold obtained from the novel method gets a lower false alarm probability comparing with the direct DFT algorithm with no compression. The noise immunity is enhanced-Presently FFT usage in GPS receivers has been a topic of extensive study and many improved FFT-based acquisition methods with averaging correlation technique also have emerged. Although averaging arithmetic can reduce the instant processing points of FFT/IFFT, their noise performance is not promising. In this paper a novel compress-sampling algorithm for FFT-base GPS signal acquisition method is proposed. It not only diminishes the size of FFT/IFFT core but also enhances the noise immunity of receiver with its “redundancy” structure. Simulation results of Matlab testify that the computational complexity of the novel algorithm has been efficiently suppressed to only 0.93 over the 2D search method in time domain. At the same time the lower amplitude threshold obtained from the novel method gets a lower false alarm probability comparing with the direct DFT algorithm with no compression. The noise immunity is enhanced
Date : 2025-12-24 Size : 85kb User : zohreh
[GPS develop] GPS-research DL : 0: 本文以GPS中频数字信号的仿真为目标,以Matlab/Simulink为平台,对真实环境下中频信号的生成算法!接收算法进行了研究和仿真实现"论文详细论述了GPS中频数字信号的数学模型!导航信号的误差模型,和信号仿真时应注意的关键问题,给出了中频信号软件模拟器结构"同时,论文对中频信号的接收算法也进行了简单的研究,并用仿真生成的数字中频信号对软件接收机的捕获和跟踪性能进行了验证"实验结果表明该系统基本实现了GPS中频信号的产生和接收功能,接收端能正确解扩解调,能在一定精度下得到伪码初始相位和载波频率" -GPS IF digital signal simulation in Matlab/Simulink platform, the paper discusses in detail the mathematical model of the GPS IF digital signal received IF signal generation algorithm in a real environment! Algorithm research and simulation! Navigation error model of the signal, and the signal simulation should pay attention to the key issues, given the structure of the IF signal simulator software the same time, the paper also the IF signal reception algorithm simple, and digital IF signal generated by the simulation software The receiver acquisition and tracking performance is verified experimental results show that the system is the basic realization of the GPS IF signal generating and receiving functions, the receiving side can correctly despread demodulation, the initial phase and carrier frequency of the pseudo-code can be obtained under certain precision "
Date : 2025-12-24 Size : 5.1mb User : luchan
[GPS develop] GPS-Matlab-Simulation DL : 0: 本书讲述了全球定位系统GPS的基本原理和概念。具体包括GPS测量原理，GPS的结构和发展历史.GPS伪距定位和载波相位定位的原理GPS中使用的坐标系和时间系统,C/A码的实现原理及载波调制过程，GPS信号捕获和跟踪原理及实现.便携式GPS系统的设计与实现及常用芯片资料等。-This book describes the basic principles and concepts of the Global Positioning System (GPS). Including the structure and history of the development of the principle of GPS measurements, GPS the GPS pseudorange positioning and carrier phase positioning principle of GPS coordinate system and time system, the realization of the principle of the C/A code and carrier modulation process, GPS signal acquisition and tracking Design and Implementation of the principle and implementation of portable GPS systems and common chip data.
Date : 2025-12-24 Size : 4.4mb User : 丁明亮
[GPS develop] nmearead DL : 0: 程序在matlab平台实现，功能是将GPS接收的存储在.nmea文件中的数据分别读入到结构体-Program in matlab platform, function is the data stored in the GPS receiver. Nmea files were read into the structure
Date : 2025-12-24 Size : 56kb User : wuchengliang
[GPS develop] GPS_MATLAB DL : 0: 本书讲述了全球定位系统（GPS）的基本原理和概念，具体包括：GPS测量原理、GPS的结构和发展历史；GPS伪距定位和载波相位定位的原理；GPS中使用的坐标系和时间系统；C/A码的实现原理及载波调制过程；GPS信号捕获和跟踪原理及实现；便携式GPS系统的设计与实现及常用芯片资料等。此外，本书还讲了利用Matlab仿真GPS中涉及到的各种算法和原理，并且给出了所有仿真源程序和仿真框图。利用Matlab仿真，读者可以更好地理解GPS中的关键技术，这是本书的特点。本书可作为高等院校导航、通信、测量和测绘等专业的高年级学生或研究生的GPS课程教材，同时也可供相关专业师生及研究人员阅读参考。-This book tells the story of a Global Positioning System (GPS) of the basic principles and concepts, including: the structure and the history of GPS measuring principle, GPS the principle of GPS positioning pseudo-range and carrier phase positioning GPS coordinates and time systems used in the principle and the carrier modulation process, C/a code GPS signal acquisition and tracking principle and implementation design and implementation of information and common chips and other portable GPS systems. In addition, the book also talked about the use of Matlab simulation GPS involved in the various algorithms and principles, and gives all the source code and simulation simulation diagram. Use Matlab simulation, the reader can better understand the key GPS technology, which is characteristic of the book. This book can serve as institutions of higher learning navigation, communication, and surveying and other GPS curriculum materials professional senior or graduate student, but also f
Date : 2025-12-24 Size : 20.04mb User : 杨阳