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Description: Automatic target detection in SAR image is the first stage in the ATR (Automatic Target Recognition) system. It is very important to improve the computing efficiency of the whole system. A conventional automatic target detection method is CFAR (constant false alarm rate) which is based only on the amplitude, discards the phase and thereby sacrifices half information of the SAR imagery. Almost each CFAR brings a large number of false alarms. 2L-IHP (two-look internal Hermitian product) is a new method which exploits the phase and amplitude information. In this paper, both CFAR and 2L-IHP algotithms are compared with an emphasis on 2L-IHP. The 2L-IHP algorithm for target detection is discussed briefly first. In order to apply it widely, it is modified to circumvent the constraint of the data. For polarimetric SAR images, PWF (Polarimetric Whitening Filter) is used to generate an image for target detection. According to ADTS data set, these algorithms are analyzed and evaluated respectively. C-、L- and P- band AIRSAR data are also processed, and some tentative conclusions are derived: Considering the penetrating ability of the microwave, L-band got the best detection accuracy of the three bands; HH polarization performed better for target detection than VV and HV polarization; Moreover, because more information is contained in polarimetric SAR data, here, we conclude that polarimetric SAR data have advantages over single polarized SAR data when they are applied for target detection. But all these conclusions need further validation.
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Size: 288371 |
Author: xbtown@126.com |
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Description: SAR图像ＣＳ成像方法，matlab程序，希望能与大家共享-SAR images CS imaging methods, Matlab procedures, we hope to share with
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Size: 2048 |
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Description: Forst滤波器,实现SAR图像相干斑点去噪-Forst filter, in SAR images speckle denoising
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Size: 1024 |
Author: 潘志刚 |
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Description: SAR图像斑点噪声是一个影响SAR图像处理的重要因素，这里提供了斑点噪声滤除的几种方法-SAR images speckle is a SAR image processing effects of the important factors, here to provide a speckle reduction in several ways
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Size: 2048 |
Author: 张璇 |
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Description: SAR图像仿真～ 用于雷达系统仿真。共同讨论-SAR images for simulation-radar system simulation. Discuss
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Size: 5120 |
Author: 力欧 |
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Description: 极化SAR图像中的将协方差矩阵数据进行PAULI分解的程序-Polarization SAR images will covariance matrix data Pauli decomposition process
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Size: 1024 |
Author: 王文光 |
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Description: 关于SAR和极化SAR信息处理的好程序。Cloude.m——经典的Cloude极化分解方法中H/alpha参数的求解方法；classes.m——Cloude极化分解方法；myCFAR.m——三种SAR图像目标检测的恒虚警处理方法。全局CFAR，局部CFAR，指数CFAR-SAR and POLSAR information processing codes. Cloude.m-- H/alpha parameter ofclassic Cloude polarization decomposition classes.m--Cloude decomposition myCFAR.m-- the three CFAR methods of target detection in SAR images
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Size: 2048 |
Author: yule |
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Description: 对sar复数二进制格式影像读取，并做几何校正，斑点噪声去除等相关处理-Sar images of complex binary format to read, and do geometric correction, speckle noise removal and other related treatment
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Size: 4016128 |
Author: winnie woo |
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Description: 双极化SAR用一个小天线作为单个辐射单元，将此单元沿一直线不断移动，在不同位置上接收同一地物的回波信号并进行相关解调压缩处理的侧视雷达。-The Defence R&D Canada–Ottawa (DRDC Ottawa) is participating in a joint
experiment with the Air Force Research Laboratory (AFRL) in Rome, New York
under TTRDP. The objective of this study is to understand bistatic radar and bistatic clutter statistics, and to investigate processing methods with the ultimate aim of detecting airborne targets. As part of this study SAR processing techniques are developed for bistatic SAR data.
The data set used to test the processor in this study were acquired in Rome, NY during the trial dated 28 January 2002. The data are examined for saturation, integrity,spectral properties and phase stability. The bistatic SAR processor is coded in Matlab using time-domain azimuth compression and bistatic SAR images are produced.
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Size: 1427456 |
Author: 陈强 |
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Description: 这是几幅比较好的SAR影像，可用于去噪或者目标提取、分割等算法的示例图像，图片比较清晰而且地物比较丰富。-This is the good pieces of SAR images can be used for denoising or object extraction, image segmentation algorithm for example, the picture is relatively clear and rich in surface features.
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Size: 1188864 |
Author: 王文波 |
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Description: 适用于高分辨SAR图像的全局稳态最小水平集分割方法-High-resolution SAR images for the global steady-state minimum level set segmentation method
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Size: 524288 |
Author: uncle Wang |
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Description: 一种极化SAR图像模糊分类方法One kind of fuzzy classification of polarimetric SAR images-One kind of fuzzy classification of polarimetric SAR images
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Size: 713728 |
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Description: 几幅SAR图像。对SAR图像处理的童鞋很有用的。-Pieces of SAR images. Of SAR image processing is useful for students.
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Size: 7236608 |
Author: zhang |
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Description: SAR图像中直线提取资料，SAR图像中直线提取资料 -LINEAR FEATURE DETECTION IN SAR IMAGES
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Size: 1370112 |
Author: lm |
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Description: Quality of Synthetic Aperture Radar (SAR) images is very sensitive for both pulse signal spectrum purity and
stability of the radar platform flight path. In this paper detailed influence of this factors on SAR images quality is
analyzed. Analysis is based mainly on computer simulations. This kind of analysis is very important because not all SAR
image degradation factors can be compensated using digital signal processing algorithms
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Size: 311296 |
Author: yas |
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Description: 一个溢油检测算法，先检测暗区目标，再进行特征提取，然后分类识别-We present algorithms for automatic detection of oil
spills in synthetic aperture radar (SAR) images. The algorithms
consist of three main parts, namely: 1) detection of dark spots
2) feature extraction from the dark spot candidates and 3) classification
of dark spots as oil spills or look-alikes.
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Size: 1208320 |
Author: jack w |
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Description: sar图像具有全天时，全天候的特性受人们青睐，但是存在斑点噪声，本文为去除噪声所用的各种统计模型-sar images have all day, all-weather features affected people of all ages, but there speckle noise, the paper used for removing noise of various statistical models
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Size: 801792 |
Author: 张跃龙 |
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Description: 一种多波段SAR图像伪彩色融合算法,提出了一种基于Contourlet 变换与IHS 变换结合的伪彩色融合算法.-False Color Fusion Algorithm for Multi-band SAR Images,false color fusion algorithm for multi-band SAR images was proposed based on Intensity-Hue- Saturation (IHS) transform in contourlet domain
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Size: 1303552 |
Author: lee |
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Description: CFAR实现sar图像船舰目标检测与识别的matlab代码(Constant false alarm algorithm CFAR to achieve the sea surface SAR images, ship target detection and identification of matlab code)
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Size: 5237760 |
Author: 半瓶墨水
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Description: 很好的SAR成像代码，使用C++来对合成孔径雷达图像进行成像(C++ is used to image SAR images)
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Size: 568320 |
Author: ruoshui123
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