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Description: 几个文件分别对应于几个常用的数字调制解调仿真算法源代码。有ASK, OOK, 频移键控(FSK), 二相编码信号调制（BPSK）, QPSK, 8PSK调制及解调。
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Size: 56674 |
Author: zhaoyang12555@163.com |
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Description: 掌握梳状导频和信道估计算法，实现MATLAB仿真；建立简单的系统结构和信道模型；在含多普勒频移的瑞利衰落信道下，进行含信道估计算法的OFDM系统仿真，并进行性能分析。
-Comb master and pilot channel estimation algorithm, the realization of MATLAB simulation the establishment of a simple system structure and channel model with Doppler frequency shift in the Rayleigh fading channel, the channel estimation algorithm with the OFDM system simulation and performance analysis.
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Size: 10240 |
Author: 林杉 |
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Description: mtd的8通道算法。附带高斯白噪声、多普勒频移的动目标回波-8-channel algorithm for mtd
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Size: 1024 |
Author: 韩冰 |
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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
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Size: 357376 |
Author: 铁头 |
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Description: 该文档介绍了高速移动情况下，由于多普勒频移导致的ICI干扰问题。描述了问题的产生，解决的算法，并附有自消除、最大似然估计、卡曼滤波参数估计的matlab仿真-introuces the ICI problem in high-speed mobile radion channel.Describe the reasons ,algorithms,such as Self-cancellation,ML,Kalman.And the M files
are atteched
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Size: 390144 |
Author: 夜思明 |
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Description: 基于极大似然估计方法的多普勒额频移估计算法-Maximum likelihood estimation method based on the Doppler frequency shift estimation algorithm places
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Size: 3072 |
Author: 罗光友 |
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Description: 熟悉图像的频域滤波算法、灰度图经FFT 后变到频域、噪声及移除-Familiar image of the frequency domain filtering algorithm, after the change to grayscale by the FFT frequency domain, noise and removed
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Size: 394240 |
Author: 王子剑 |
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Description: 基于采样率变换和循环卷积的GPS信号快速捕获。提出了一种适用于GPS软件接收机的C/A码和多普勒频移的快速捕获算法。该算法结合了采样变换FFT和时域卷积两种方法，提高了捕获速度和多普勒频移的精度。-Based on the sampling rate conversion and fast circular convolution of the GPS signal capture. Presents a GPS receiver software for C/A code and Doppler shift of the fast acquisition algorithm. The algorithm combines the time-domain sampling transform FFT and convolution are two ways to improve the capture speed and accuracy of the Doppler frequency shift.
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Size: 528384 |
Author: haodiangei |
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Description: matlab中使用FFT算法求两个信号的时频二维（互模糊）函数，可以实现信号的时延、多普勒频移联合估计（需要根据实际场景适当修改参数）-oint estimation matlab frequency two-dimensional FFT algorithm seeking the two signals (cross ambiguity) function, signal delay, Doppler shift
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Size: 1024 |
Author: milttuso |
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Description: OFDM系统的最大似然同步（ML）算法的程序，信道模型为带有多普勒频移的瑞利衰落信道。-OFDM system maximum likelihood synchronization procedures (ML) algorithm, the channel model with the Doppler shift of the Rayleigh fading channel.
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Size: 1024 |
Author: zhangwei |
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Description: 基于平移不变小波变换的多普勒速度声纳输出信号处理.针对水下航行器组合导航系统所使用的多普勒速度声纳输出信号的特点,采用了平移不变小波变换的多分辨率分析的方法,利用Daubechies小波函数,采用了半软阈值去噪的方法,能够在低信噪比的情况下准确地估计多普勒声纳的频移,从含有噪声的多普勒输出信号中提取出原始信号.通过仿真实验表明:采用4层小波分解,算法计算量减小,有效地消除多普勒噪声,从而提高水下组合导航系统的精度. -Doppler speed the sonar output signal processing based on translation invariant wavelet transform. Integrated navigation system for underwater vehicle using the Doppler-velocity sonar output signal using translation invariant wavelet transform multiresolution analysis method using Daubechies wavelet function, using a semi-soft threshold denoising method to accurately estimate the Doppler sonar frequency shift in the case of low signal-to-noise ratio output signal with noise from the Doppler extract the original signal. Simulation results show that: 4 layer wavelet decomposition algorithm to calculate the amount decreases, effectively eliminate the Doppler noise, thereby improving the accuracy of the underwater integrated navigation system.
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Size: 325632 |
Author: cooldog |
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Description: 实现傅里叶算法中的各项特性，如线性特性、频移特性、对称性、循环卷积等-Characteristics of the Fourier algorithm, such as the linear characteristics, frequency shift characteristics, symmetry, circular convolution
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Size: 5120 |
Author: Lu |
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Description: 包含用于条纹图像的旋转滤波、四步相移法程序和多频外差算法程序，用于光栅投影法的三维重建-Contains filter fringe image rotation, four-step phase shift method procedures and multi-frequency heterodyne algorithm for three-dimensional reconstruction of the grating projection
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Size: 2048 |
Author: 谢剑河 |
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Description: 利用扩展卡尔曼算法( EKF)对高动态直接扩频信号的载波相位和频率进行了估计,并利用载波辅助技术测量载波相位的变化值来
校正伪码延时环,减小多普勒频移对伪码延时的影响,得到了精确的延时估计值,提
高了伪码延时锁定环的动态跟踪性能.-The PN delay loop is adjusted through measuring the varied value of carrier phase with carrier aiding technology. The effect of Doppler shift on PN code delay is reduced through carrier aid-
ing technology. The precise delay estimation is obtained. The dynamic tracking performance of the PN delay loop is improved.
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Size: 613376 |
Author: 李新一 |
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Description: 窄带相关脉冲估计多普勒频移(包括解模糊算法)-Narrowband related pulse Doppler shift estimation (including solution fuzzy algorithm)
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Size: 1024 |
Author: 郭杰 |
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Description: 在研究了超高速OFDM系统传输模型的基础上，对OFDM系统的传输信号结构进行了分析，结合传统的多普勒频移算法，用OFDM信号循环前缀所包含的相对频偏信息设计了实时性较好的多普勒频移估计方法，并分析了多径效应对于循环前缀数据的“污染”效应，对该算法进行了优化，提高了算法的频移估计性能，并对该算法进行了性能验证。-Based on the study ultra-high-speed transmission of OFDM system model, the OFDM signal structure for the transmission system is analyzed, combined with traditional Doppler shift method, the relative deviation OFDM signal with cyclic prefix information contained in the real-time design Doppler shift better estimation methods, and analyzes the " pollution" effect of multipath effects for cyclic prefix data, the algorithm has been optimized to improve the frequency estimation algorithm performance and the performance of the algorithm verification.
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Size: 22528 |
Author: 但的东 |
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Description: 里面有多个多普勒频移估计的高质量文章，不同的温江介绍不等的算法，有几个会有相似之处，在我看来这是非常好的多普勒频移估计的IEEE文章，希望对大家有用！-There are more than the estimated Doppler shift quality paper, different algorithms ranging Wenjiang introduction, there are several similarities, in my opinion this is a very good estimate of the Doppler shift of IEEE article, we hope to useful!
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Size: 3410944 |
Author: sunjing |
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Description: ZOOM-FFT称为细化的快速傅立叶变换，又称为选带快速傅立叶变换。ZOOM-FFT的功能是对信号的频率进行局部细化放大，使感兴趣的频带获得较高的频率分辨率。实现FFT细化功能的算法有几种，如频移法-、相位补偿法和最大熵谱法等，目前应用最关的是频移法(ZOOM-FFT is called a thinned Fast Fourier Transform, also known as Fast Fourier Transform. The function of ZOOM-FFT is to partially refine and amplify the frequency of the signal so as to obtain the higher frequency resolution of the frequency band of interest. There are several algorithms to achieve FFT refinement, such as frequency shift -, phase compensation and maximum entropy spectral method, the current application of the most relevant is the frequency shift method)
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Size: 10240 |
Author: 嘚嘚嘚 |
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Description: 本程序利用交替优化的方法实现了8-PSK信号在多普勒频移条件下的相位和定时双参数同步，不仅程序注释清晰，而且附上该程序实验报告，力求便于读者理解。(By optimizing alternately, this program realizes two parameters synchronization of phase and timing for 8-psk signal under Doppler frequency shifting channel. For better understanding of readers, I not only note the program clearly, but also provide the experimental report in the rar.)
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Size: 598016 |
Author: sima大侠 |
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