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Description: point_analysis.m 主程序 P_fft.m 计算fft插值扩展点目标 rel.m 计算分辨率 PSLR.m 峰值旁瓣比 ISLR.m 积分旁瓣比 sinc2.m 二维sinc函数 kaiser2.m 二维kaiser窗函数
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Size: 2188 |
Author: yuanyu0102@126.com |
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Description: SAR雷达基本信号处理算法，包含fft,crange等16个文件，对初学者对SAR雷达的理解有很大的帮助-SAR basic radar signal processing algorithms, including fft, crange such as 16 documents, for beginners to understand the SAR radar very helpful
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Size: 33792 |
Author: 咖啡 |
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Description: C语言版,机载SAR回波仿真程序，附有FFT和复数库，以及位图显示模块。本程序注释详解，对加深SAR的理解有很好的帮助-C language version, airborne SAR echo simulation program with FFT and complex database, as well as bitmap display module. Detailed notes of this procedure, for deepening the understanding of SAR has a good assist
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Description: 基于FFT的快速SAR分布目标回波模拟算法.
大面积分布目标的合成孔径雷达(SAR)回波模拟需要大量的运算，文中提出了一种合成孔径雷达回波模拟的快速算法，算法利用时域插值和FFTl’来缩减运算量，对于大面积目标回波模拟时，该算法有很高的效率。文中详细分析sinc函数插值所带来的误差以及补偿方法，并在次基础上提出了一种利用增采样插值方法，该方法以增加少量运算为代价，使得模拟精度的大幅度提高。文中比较了传统方法和基于FFTl’的快速SAR分布目标回波模拟算法的模拟结果，证明了这种快速算法确实行之有效。-The simulation of distributed targets is very important to the design of synthetic aperture radar(SAR)sys-
tems．Since the end product is SAR images，the echo of SAR signals needs to be simulated and then processed form SAR images，an d the parameters needs to be measured and the perform ance of the images should be，an d then evaluated．The designing parameters of SAR could be adjusted to meet the requirement of users before developing SAR systems，specially
in space—bome SAR systems．Th e simulation data is also needed during the developing an d debugging of a space—borne SAR real—time processor．Another purpose of simulation is to supply a great deal of simulation imag es to train image usors of space—bo rne SAR before it launch．
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Size: 320512 |
Author: nico |
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Description: 空载合成孔径雷达系统的研制过程中常需要对某些关键算法和功能原理进行验证，而这些验证用的数据
又不可能完全通过代价昂贵的实际飞行获得，因此通过半实物仿真和信号模拟来获得所需的目标回波数据成为一个有效
的解决手段。-Synthetic Aperture Radar (SAR) simulator of an extended three-dimensional scene is presented. It is based on a facet model for the scene, asymptotic evaluation of SAR unit
response, and two-dimensional fast Fourier transform (FFT) code
for data processing. Prescribed statistics of the model account for
a realistic speckle of the image. The simulator is implemented in a code (SARAS) whose performance is described and illustrated by a number of examples.
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Size: 1202176 |
Author: nico |
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Description: SAR radar的訊號模擬,在LFM中加入雜訊,FFT分析訊號-SAR radar signal simulation, in the LFM adding noise, FFT signal analysis
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Size: 1024 |
Author: 賴欣呈 |
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Description: Many synthetic aperture radar (SAR) image formation algorithms require the computation of a multidimensional
Fourier transform of irregularly-sampled or unequally-spaced data samples. We apply a recently developed
algorithm, the unequally-spaced FFT (USFFT),2 to SAR image formation and compare its accuracy and complexity
to a conventional algorithm. We find that the USFFT algorithm allows comparable accuracy to traditional
approaches at a slightly reduced computational cost. We briefly discuss extensions of the USFFT algorithm to
multiresolution SAR imaging
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Size: 180224 |
Author: ali |
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Description: SAR RD 成像算法，ftx与fty分别为方位向和距离向fft，需要对fft进行两次fftshift-SAR RDimaging algorithm
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Size: 1024 |
Author: sun |
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Description: SAR雷达BP算法
his function performs a basic Backprojection operation.
The following fields need to be populated:
data.Nfft:Size of the FFT to form the range profile
data.deltaF:Step size of frequency data (Hz)
data.minF:Vector containing the start frequency of each pulse (Hz)
data.x mat:The x?position of each pixel (m)
data.y mat:The y?position of each pixel (m)
data.z mat:The z?position of each pixel (m)
data.AntX:The x?position of the sensor at each pulse (m)
data.AntY:The y?position of the sensor at each pulse (m)
data.AntZ:The z?position of the sensor at each pulse (m)
data.R0:The range to scene center (m)
data.phdata:Phase history data (frequency domain)
Fast time in rows, slow time in columns-function data = bpBasic(data)
This function performs a basic Backprojection operation.
The following fields need to be populated:
data.Nfft:Size of the FFT to form the range profile
data.deltaF:Step size of frequency data (Hz)
data.minF:Vector containing the start frequency of each pulse (Hz)
data.x mat:The x?position of each pixel (m)
data.y mat:The y?position of each pixel (m)
data.z mat:The z?position of each pixel (m)
data.AntX:The x?position of the sensor at each pulse (m)
data.AntY:The y?position of the sensor at each pulse (m)
data.AntZ:The z?position of the sensor at each pulse (m)
data.R0:The range to scene center (m)
data.phdata:Phase history data (frequency domain)
Fast time in rows, slow time in columns
The output is:
data.im final:The complex image value at each pixel
Written by LeRoy Gorham, Air Force Research Laboratory,
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Size: 3072 |
Author: beautyheart |
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Description: 迭代自组织数据分析，GSM中GMSK调制信号的产生，计算加权加速度,合成孔径雷达（SAR)目标成像仿真，基于kaiser窗的双谱线插值FFT谐波分析，数据模型归一化，模态振动。- Iterative self-organizing data analysis, GSM is GMSK modulation signal generation, Weighted acceleration, Synthetic Aperture Radar (SAR) imaging simulation target, Dual-line interpolation FFT harmonic analysis kaiser windows, Normalized data model, modal vibration.
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Size: 7168 |
Author: rrjxza |
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Description: 具有丰富的参数选项,合成孔径雷达（SAR)目标成像仿真，基于kaiser窗的双谱线插值FFT谐波分析，pwm整流器的建模仿真，有借鉴意义哦，是小学期课程设计的题目，一种噪声辅助数据分析方法,保证准确无误，是学习通信的好帮手。- It has a wealth of parameter options, Synthetic Aperture Radar (SAR) imaging simulation target, Dual-line interpolation FFT harmonic analysis kaiser windows, Modeling and simulation pwm rectifier There are reference Oh, Is the topic of the elementary school stage curriculum design, A noise auxiliary data analysis method, Ensure accurate communication is learning a good helper.
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Size: 7168 |
Author: bsjbzssax |
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Description: 基于kaiser窗的双谱线插值FFT谐波分析，实现了对10个数字音的识别，使用起来非常方便，是机器学习的例程，合成孔径雷达（SAR)目标成像仿真，最大似然（ML）准则和最大后验概率（MAP）准则，FMCW调频连续波雷达的测距测角，脉冲响应的相关分析算法并检验。- Dual-line interpolation FFT harmonic analysis kaiser windows, To achieve the recognition of 10 digital sound, Very convenient to use, Machine learning routines, Synthetic Aperture Radar (SAR) imaging simulation target, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, FMCW frequency modulated continuous wave radar range and angular measurements, Related impulse response analysis algorithm and inspection.
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Size: 6144 |
Author: zbahtkm |
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Description: 合成孔径雷达（SAR)目标成像仿真，研究生时的现代信号处理的作业，有借鉴意义哦，最终的权值矩阵就是滤波器的系数，基于kaiser窗的双谱线插值FFT谐波分析，可以广泛的应用于数据预测及数据分析,各种kalman滤波器的设计，是机器学习的例程。- Synthetic Aperture Radar (SAR) imaging simulation target, Modern signal processing jobs when the graduate, There are reference Oh, The final weight matrix is ??the filter coefficient, Dual-line interpolation FFT harmonic analysis kaiser windows, Can be widely used in data analysis and forecast data, Various kalman filter design, Machine learning routines.
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Size: 5120 |
Author: cnatnv |
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Description: ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，一个师兄的毕设，合成孔径雷达（SAR)目标成像仿真。- ofdm system simulation including 16qam modulation fft windowing modules plus cp, A complete set of brothers, Synthetic Aperture Radar (SAR) imaging simulation target.
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Size: 6144 |
Author: 韩小军 |
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Description: 一篇详细介绍驻定相位原理和方法的文章，首先介绍了驻定相位原理的定义和方法，然后对SAR成像处理中需要使用的线性调频信号进行快时间的FFT-A detailed article in the principles and methods of the given phase, first introduced in principle given phase definitions and methods, and then SAR imaging process chirp signal you want to use the FFT fast time
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Size: 334848 |
Author: jiangwen |
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Description: 包括脚本文件和函数文件形式，ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，sar图像去噪的几种新的方法。- Including script files and function files in the form, ofdm system simulation including 16qam modulation fft windowing modules plus cp, Several new methods sar image denoising.
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Size: 5120 |
Author: tou |
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Description: 通过matlab代码，ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，sar图像去噪的几种新的方法。- By matlab code, ofdm system simulation including 16qam modulation fft windowing modules plus cp, Several new methods sar image denoising.
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Size: 4096 |
Author: qiufeng |
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Description: ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，已经调试成功.内含m文件，可直接运行，合成孔径雷达（SAR)目标成像仿真。- ofdm system simulation including 16qam modulation fft windowing modules plus cp, Has been successful debugging. M contains files can be directly run, Synthetic Aperture Radar (SAR) imaging simulation target.
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Size: 5120 |
Author: 王喜 |
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Description: ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，合成孔径雷达（SAR)目标成像仿真，脉冲响应的相关分析算法并检验。- ofdm system simulation including 16qam modulation fft windowing modules plus cp, Synthetic Aperture Radar (SAR) imaging simulation target, Related impulse response analysis algorithm and inspection.
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Size: 6144 |
Author: aqiqt |
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Description: 雅克比迭代求解线性方程组课设,合成孔径雷达（SAR)目标成像仿真，基于kaiser窗的双谱线插值FFT谐波分析。- Jacobi iteration for solving linear equations class-based, Synthetic Aperture Radar (SAR) imaging simulation target, Dual-line interpolation FFT harmonic analysis kaiser windows.
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Size: 8192 |
Author: fietaobaining |
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