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Description: Carrier-phase synchronization can be approached in a
general manner by estimating the multiplicative distortion (MD) to which
a baseband received signal in an RF or coherent optical transmission
system is subjected. This paper presents a unified modeling and
estimation of the MD in finite-alphabet digital communication systems. A
simple form of MD is the camer phase exp GO) which has to be estimated
and compensated for in a coherent receiver. A more general case with
fading must, however, allow for amplitude as well as phase variations of
the MD.
We assume a state-variable model for the MD and generally obtain a
nonlinear estimation problem with additional randomly-varying system
parameters such as received signal power, frequency offset, and Doppler
spread. An extended Kalman filter is then applied as a near-optimal
solution to the adaptive MD and channel parameter estimation problem.
Examples are given to show the use and some advantages of this scheme.
Platform: |
Size: 827601 |
Author: 吴大亨 |
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Description: Carrier-phase synchronization can be approached in a
general manner by estimating the multiplicative distortion (MD) to which
a baseband received signal in an RF or coherent optical transmission
system is subjected. This paper presents a unified modeling and
estimation of the MD in finite-alphabet digital communication systems. A
simple form of MD is the camer phase exp GO) which has to be estimated
and compensated for in a coherent receiver. A more general case with
fading must, however, allow for amplitude as well as phase variations of
the MD.
We assume a state-variable model for the MD and generally obtain a
nonlinear estimation problem with additional randomly-varying system
parameters such as received signal power, frequency offset, and Doppler
spread. An extended Kalman filter is then applied as a near-optimal
solution to the adaptive MD and channel parameter estimation problem.
Examples are given to show the use and some advantages of this scheme.
Platform: |
Size: 827392 |
Author: 吴大亨 |
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Description: 对MTD雷达中进行杂波滤除的滤波器组，就是多普勒滤波器组的仿真-Of MTD radar clutter filter in the filter group, that is, the simulation of Doppler filter bank
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Size: 1024 |
Author: 刘姝 |
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Description: Doppler filter in FIR implementation
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Size: 1024 |
Author: Mico |
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Description: 使用Jakes所假设的模型，用来产生信道抽头延迟线模型中的抽头增益过程所需的多普勒频谱成形滤波器有多种实现方法。时域FIR滤波器是最常用的一种实现方法。-Assumed the use of Jakes model, used to generate the channel-tap-tap delay line model of the process gain the necessary Doppler spectrum shaping filter has a variety of implementations. Time domain FIR filter is an implementation of the most commonly used method.
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Size: 2048 |
Author: wengfh |
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Description: A FFT-based partial matched filter (PMF)
acquisition threshold setting method for fast GPS acquisition is
presented. Normal distribution and numerical fitting technique
instead of real decision variable (DV) distribution are used in
derivation to approximate the threshold expression, and the
modification method for the threshold expression is also
presented. The threshold expression is based on the individual
FFT Doppler bin false alarm probability rather than the
convention whole detector false alarm probability. The
proposed threshold expression can be adjusted according to
the false alarm probability, the noncoherent accumulation
(NCA) length and the estimated noise variance. Furthermore
we discuss the implementation of zero-padding FFT with its
advantage and limitation. The performance is superior
compared to the reference method in terms of signal-to-noise
ratio (SNR) when detection and false alarm probabilities are
used as measurement criteria.
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Size: 280576 |
Author: zohreh |
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Description: 实现简单的脉冲多普勒雷达系统，和简单的距离匹配滤波器组-To achieve a simple pulse-Doppler radar systems, and a simple matched filter distance
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Size: 4096 |
Author: 杨健 |
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Description: 基于FPGA的多相滤波器设计
摘要: 以脉冲多普勒雷达信号处理为背景,研究了数字多相滤波器的特点和设计方法 进而研究数字多相滤波器的数字仿真
方法与 FPGA 实现技术 对于自主研究 设计和实现雷达信号处理的各种结构的滤波器具有重要的意义-Based FPGA multiphase Filter Design Abstract: Pulse Doppler signal processing background studied digital polyphase filter characteristics and design method then research digital multiphase filter Digital Simulation Method and FPGA Realization Technology For autonomous research design and realization radar signal processing various structures filter great significance
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Size: 322560 |
Author: sfef |
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Description: the doppler filter have been development
Platform: |
Size: 2048 |
Author: quanboy |
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Description: 本文提出了一种适用于低轨卫异扩频通信系统的多普勒频移快捕方法.该方法基于数字匹配滤波器及自动频率控制环路_利用数字匹配滤波器的囚码快捕特性及其输出主相关峰值对频偏的敏感性，缩短多普勒频移的
捕获时间.论文首先推导了多普勒频移的平均捕获时间表达式，然后根据数值分析结果得到了准最佳捕获判决策略，最后通过比较验证了该快捕方法相对于传统串行捕获方法在性能上的提高.
-This paper presents a low-orbit health for different spread spectrum communication system fast catching the Doppler shift method, which based on digital matched filter and automatic frequency control loop _ prisoners using digital matched filter code features rapid acquisition and the output of the main correlation peak frequency deviation of the sensitivity of the Doppler frequency shift to shorten acquisition time. paper first derive the mean Doppler shift acquisition time expression, then the numerical results obtained quasi-optimal capture decision strategies, and finally verified by comparing with the rapid acquisition method to capture the traditional method of serial improvement in performance.
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Size: 815104 |
Author: 李嵩 |
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Description: A set of IIR filter design source code with GUI, this tool can design most of Doppler filter shapes, including classic 6dB, Flat, Rounded, Bell shape, Guassian shape, etc.
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Size: 37888 |
Author: Wzh |
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Description: 对MTD雷达中进行杂波滤除的滤滤波器组，就是多普勒滤波器组的仿真
-MTD radar clutter filter filter filter bank, is the simulation of the Doppler filter
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Size: 1024 |
Author: bl |
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Description: 由于信号在传播过程中，由于接收机的移动，就会产生多普勒频移，该文件先分析了多普勒滤波器的频响以及对多普勒频移进行了仿真-Due to the signal in the propagation process, due to the movement of the receiver, and will produce the Doppler shift, the file is first analyzed the frequency response of the Doppler filter and the Doppler shift the simulation
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Size: 1024 |
Author: 韩瑞 |
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Description: 瑞利信道的仿真，里面有瑞利的文档知识，仿真最后出瑞利分布的概率分布密度图和多普勒滤波器的频响图-Rayleigh channel simulation, which has knowledge of the Rayleigh documentation, simulation finally the probability distribution of the Rayleigh distribution density map and Doppler filter response chart
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Size: 81920 |
Author: 李明 |
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Description: Correlated Rayleigh fading channel generator based on Doppler filter
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Size: 1024 |
Author: sheryl |
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Description: Rayleigh Doppler Multipath, single path, filter model simulators.-A Rayleigh fading simulator based on Clarke s Model Creates a Rayleigh random process with PSD determined by the vehicle s speed.
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Size: 9216 |
Author: nick |
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Description: Doppler filter to simulate movements in wireless channel
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Size: 1024 |
Author: dmm_mat |
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Description: 本程序实现雷达信号检测，包括脉冲对消，多普勒滤波器组和CFAR检测等等。-
This procedure to achieve radar signal detection, including pulse cancellation, Doppler filter bank and CFAR detection, etc..
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Size: 167936 |
Author: wang |
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Description: 在多普勒定位中，利用卡尔曼滤波对移动节点的坐标进行数据处理(In the doppler positioning, the data processing of the coordinates of the moving nodes is processed using kalman filter)
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Size: 1024 |
Author: haizweiw
|
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Description: 通过8脉冲 多普勒滤波器 MTD对慢速目标进行滤除，获得动目标(Through the 8 pulse Doppler filter MTD, the slow target is filtered, and the moving target is obtained)
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Size: 21504 |
Author: 明侦探
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