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Description: GPS的pn码捕获matlab仿真程序，通过序列相关实现捕获功能-GPS-pn code acquisition matlab simulation program, through the serial correlation realize capture
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Size: 1024 |
Author: 李永 |
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Description: 详细介绍了(同步信号块处理)方法在静态软件接收机数据处理方面的应用。首先说明了的基本思想,然后具体介绍了捕获时根据相位差求精频的方法,以及在跟踪时使用理想相关方法进行码跟踪,使用相位差方法频率跟踪的详细过程，最后,在一个码周期内数字化码非整数的采样率下,提出了首尾相接的改进方法,成功实现了软件数据的跟踪。-Described in detail (synchronous signal block treatment) method in the static receiver data processing software applications. First of all, illustrates the basic idea, and then introduce a specific capture refinement based on phase-frequency method, as well as in tracking the use of the ideal correlation method for code tracking, frequency tracking using the phase difference method of the detailed process, finally, 1 yards in the cycle within the digital code of non-integer sampling rate, the proposed improvements in both phase methods, the successful implementation of data tracking software.
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Size: 522240 |
Author: 何宁 |
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Description: matlab 编写的GPS信号解调及分析算法-matlab prepared GPS signal demodulation and analysis of algorithms
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Size: 41984 |
Author: li jian |
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Description: 概述了 GPS[全球定位系统] P码产生原理 ,用 Mat lab 的 m语言实现了 P 码的产
生 ,进而分析了其自相关和互相关特性 ,为进一步研究 P码直接捕获和 P [ Y]码的破译提供了
依据-Provides an overview of GPS [Global Positioning System] P code generated principle, using the Mat lab language m realize the selection of the P code, and then analyzes its autocorrelation and cross correlation properties, for further study on P code direct capture and P [Y] Code provide a basis for deciphering
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Size: 661504 |
Author: captain |
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Description: GPS TOOLBOX包含以下内容：
1、GPS相关常量和转换因子；
2、角度变换；
3、坐标系转换：
点变换；
矩阵变换；
向量变换；
4、专用测绘程序；
5、专用统计函数；
6、GPS时间工具；
7、专用GPS数据处理函数；
8、航迹和相关工具；
9、卫星位置计算；
10、高度和方位角判定，以及卫星可见性；
11、DOP（dilution of precision）计算，卫星选取和相关函数；
12、专用信号处理和Kalman滤波函数；
13、伪距和误差判定及相关函数；
14、用户位置判定及相关函数；
15、RAIM/FDE可用性和完好性评估相关函数。
-GPS TOOLBOX contain the following elements: 1, GPS-related constants and conversion factor 2, the perspective transform 3, coordinate system conversion: point transform matrix transformation vector transform 4, private surveying and mapping procedures 5, specialized statistical function 6, GPS time instrument 7, a dedicated GPS data processing function 8, track and related tools 9, satellite position calculation 10, height and azimuth determination, as well as satellite visibility 11, DOP (dilution of precision) calculation , satellite selected and related functions 12, special-purpose signal processing and Kalman filtering function 13, pseudo-range and error determination and related functions 14, to determine user location and related functions 15, RAIM/FDE availability and good assessment of correlation function.
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Size: 3180544 |
Author: jnansxiang |
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Description: 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
Platform: |
Size: 254976 |
Author: zohreh |
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Description: 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
Platform: |
Size: 87040 |
Author: zohreh |
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Description: 关于GPS中BOC信号的产生，功率谱密度仿真，自相关函数以及与C/A码的互相关仿真程序。能够有效的对BOC信号的特性进行分析-On the GPS in the BOC signal generation, power spectral density simulation, the autocorrelation function as well as with the C/A code cross-correlation simulation program. Of the BOC can effectively analyze the characteristics of the signal
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Size: 8192 |
Author: LJJ |
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Description: GPS定位采用UKF滤波方式。包括调用的数据dat文件（选用卫星数据和机动目标运行轨迹数据）和调用的sigma点生成子程序。运行可观察定位误差（位置、速度和加速度）-GPS positioning using UKF filtering method. The data include call dat file (optional operation of satellite data and maneuvering target trajectory data) and the sigma point generation subroutine calls. Run positioning errors can be observed (position, velocity and acceleration)
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Size: 734208 |
Author: 刘卫菠 |
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Description: GPS捕获的滑动相关捕获的算法的实现，包括C/A码的产生，数字化，还有精频的确定算法，很全的代码，希望对你有帮助-GPS captured captured sliding correlation algorithm, including the C/A code generation, digital, there are fine frequency identification algorithm, it is all the code, I hope to help you
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Size: 7168 |
Author: 铁头 |
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Description: matlab语言写成的gps信号中ca码的互相关和自相关绘图-written in matlab gps ca code signal cross-correlation and autocorrelation plot
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Size: 1024 |
Author: 彭博 |
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Description: A real-time method for detecting GPS spoofing in a narrowbandwidth
civilian GPS receiver has been implemented and
tested, both in the absence of and in the presence of
spoofing.
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Size: 301056 |
Author: jombina |
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Description: 研究了一种数字中频 GPS 信号生成方法。给出了数字中频信号数学模型，模型考虑了各种因素对信号的影响。通过导航电文分析，提出信号传播时延、多普勒频移以及信号入射方向的估计方法。给出了中频信号产生的流程，对其中时延的设置，信号的上变频、信号幅度设置以及方向信息的导入进行了阐述。对所生成的信号模型进行了仿真分析，给出了信号产生各个阶段的频谱，对所生成的信号进行了相关捕获。仿真结果表明频谱特征符合理论分析，能够被捕获并找出信号时延从而实现定位。证明该信号模型能作为信号源应用于 GPS接收机研制中。-】The paper discusses a digital IF GPS signal generation method, gives the mathematic
model of digital IF signal. This mathematic model takes into account the influence of various
factors. Based on analysis of the navigation data, the method to estimate signal propagation time,
Doppler frequency shift and the coming angle of signal is proposed. The flow to generate IF signal
is given, in which the setting of time delay, the up-frequency conversion, the setting of signal
magnitude and the introduction of direction information are expounded. The signal generation model
is simulated and analyzed, the spectrum of signal in each stage given, and the correlation capture
of the generated signal also done. Simulation indicates that the spectrum is in accord with
theoretical analysis the signal could be captured, thus find the time delay, accomplish the
orientation. The signal model is proved applicable in the research and development of GPS receiver.
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Size: 1149952 |
Author: luchan |
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Description: GPS中C_A码及其相关性运算的FPGA实现-GPS in C_A yards and correlation computing FPGA Implementation
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Size: 63488 |
Author: 施勇 |
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Description: GPS信号的matlabe仿真源代码，包括C/A码的生成及扩频和相关性分析。P码的生成扩频和相关性分析。-The matlabe simulation of GPS signal source code, including C/A code generation and spread spectrum and correlation analysis. The production of P code spread spectrum and correlation analysis.
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Size: 14336 |
Author: HPL |
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Description: Code, there are very complete notes and explanations Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, matlab implements five gray correlation degree computing model.
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Size: 4096 |
Author: tfeaivu
|
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Description: Between two images showing the relative circumstances of each pixel, Correlation analysis process matlab method, Including the area, perimeter, rectangular, elongation.
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Size: 9216 |
Author: jienenfui
|
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Description: Image optical flow calculation matlab program, Correlation diagram shown in detail the time domain and frequency domain, Multi-target tracking particle filter.
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Size: 6144 |
Author: yanfengkuiman
|
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Description: Including Deng's correlation, absolute correlation, correlation of slope, improved absolute correlation, Fiber Transmission wireless communication system performance, Calculation crosshairs diffraction image at different distances.
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Size: 7168 |
Author: jpffra
|
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Description: Compared with the results of theoretical analysis, Achieve canonical correlation analysis, Example tracking mean cheap.
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Size: 4096 |
Author: fiepengnungei
|
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