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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: Texture detection is one of important aspects in Image processing.
-Texture detection is one of important aspe Image processing in cts.
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Size: 1378304 |
Author: 趁两 |
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Description: SAR图像处理一直是一个难题，这里提供了SAR图像中道路的检测算法-SAR image processing is a problem here with the SAR image detection algorithm road
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Size: 10240 |
Author: 张璇 |
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Description: SAR图像中有很多质量问题，增益是其中之一，这里提供了SAR图像中增益检测的算法-SAR image quality of a lot of issues, one of which is Gain, here to provide a SAR image detection algorithm Gain
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Size: 9216 |
Author: 张璇 |
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Description: SAR图像中目标识别：这里提供的是SAR图像中河流的检测识别-SAR image Target Recognition : here is provided by the SAR image detection and identification of rivers
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Size: 4096 |
Author: 张璇 |
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Description: 利用VC开发卫星数据处理软件.针对SAR图象特点进行设计.可以实现SAR图象读取,微弱信息检测等功能.欢迎访问!-VC satellite data processing software. SAR image characteristics against design. SAR can be achieved Image read, weak information detection, and other functions. Welcome to!
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Size: 11264 |
Author: 甘锡林 |
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Description: 合成孔径雷达SAR图像成像中多普勒中心检测的六种算法，使用matlab编程-synthetic aperture radar images Doppler imaging centers in the six detection algorithm, the use of Matlab programming
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Size: 5120 |
Author: 赵志强 |
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Description: SAR图像的多尺度边缘检测方法，希望对大家有所帮助-SAR images of the multi-scale edge detection method, and they hope to help everyone
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Size: 64512 |
Author: 王下 |
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Description: SAR图像边缘提取的一种算法,基于方向性图像信息测度提取边缘-SAR Image Edge Detection of an algorithm, based on the direction of the edge extraction of image information measure
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Size: 6144 |
Author: xp |
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Description: ％SAR图像边缘提取的一种算法,基于邻域一致性图像信息测度提取边缘- SAR Image Edge Detection of an algorithm, based on neighborhood information measure consistency of image edge extraction
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Size: 6144 |
Author: xp |
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Description: ％SAR图像边缘提取的一种算法,基于梯度分量的图像信息测度方法提取边缘- SAR Image Edge Detection of an algorithm, based on the gradient of the image component to extract the edge information measure
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Size: 6144 |
Author: xp |
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Description: 中科院博士论文：合成孔径雷达动目标检测和成像研究-Doctoral dissertation, Chinese Academy of Sciences: synthetic aperture radar moving target detection and imaging studies
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Size: 7499776 |
Author: keyoung |
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Description: 星载SAR动目标模拟研究，通过分析星载合成孔径雷达的工作原理,建立了静止目标和动目标的斜视等效距离模型 在此基础上提出一种星载SAR动目标模拟方法,即在真实星载SAR数据中加入目标模拟回波信号 最后利用RD算法对静止和运动目标模拟成像,结果证明该方法是可行的,从而为星载SAR动目标检测和成像算法提供了有效简洁的数据源。
-Spaceborne SAR moving target simulation study, stationary targets and moving targets established by analysis of spaceborne Synthetic Aperture Radar works strabismus equivalent distance model based on a spaceborne SAR moving target simulation methods, real spaceborne SAR data the target analog echo signal Finally, the use of the the RD algorithm on stationary and moving targets analog imaging, and the results prove that this method is feasible and spaceborne SAR moving target detection and imaging algorithm provides a simple and effective data sources.
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Size: 1320960 |
Author: 李亮 |
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Description: detection on sar of cfar
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Size: 241664 |
Author: 杜朝刚 |
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Description: 一幅含有噪声的SAR 图像,可用于道路检测,或者图像去噪的研究.图像内容相对丰富清晰.-A SAR image with noise, can be used for road detection, or image denoising studies. Relative abundance of clear image content.
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Size: 578560 |
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Description: 合成孔径雷达图像目标检测资料，很有用的哦-Target detection in correlated SAR clutter
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Size: 813056 |
Author: 二毛 |
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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: SAR 图像变化检测算法的python实现(Python implementation of SAR image change detection algorithm)
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Size: 18494464 |
Author: 投笔从容
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Description: 此为合成孔径雷达动目标检测的相关学习资料，包括经典的SAR-GMTI算法原理的介绍——DPCA,ATI等。(This paper presents the relevant learning materials for the synthetic aperture radar moving target detection, including the classical SAR-GMTI algorithm, such as DPCA and ATI.)
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Size: 1930240 |
Author: 糖糖糖糖糖
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Description: In previous work, we presented GMTI detection and geo-location results from the AFRL Gotcha challenge data set, which was collected using a 3-channel, X-band, circular SAR system. These results were compared against GPS truth for a scripted vehicle target. The algorithm used for this analysis is known as ATI/DPCA, which is a hybrid of alongtrack interferometry (ATI) and the displaced phase center antenna (DPCA) technique. In the present paper the use of ATI/DPCA is extended in order to detect and geo-locate all observable moving targets in the Gotcha challenge data,
including both the scripted movers and targets of opportunity. In addition, a computationally efficient SAR imaging technique is presented, appropriate for short integration times, which is used for computing an image of the scene of interest using the same pulses of data used for the GMTI processing. The GMTI detections are then overlaid on the SAR image to produce a simultaneous SAR/GMTI map.
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Size: 1273856 |
Author: asgary
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