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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: CEOS-SAR-PRI数据格式,对于使用SAR进行数据处理,辐射校正等有帮助.可以了解卫星数据的详细信息.-CEOS- SAR-PRI data format for the use of SAR data processing, correction for help. satellite data can understand the details.
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Size: 12288 |
Author: gaxlin |
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Description: 一些sar数据，matlab文件，希望对大家有用-Some sar data, matlab file, in the hope that useful
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Size: 962560 |
Author: xycasey |
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Description: read envisat and analyis sar data from NASA
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Size: 3472384 |
Author: |
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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: SAR数据分解程序，分解为H,A,alpha分量，为SAR影像提供了较多的信息，有利于SAR影像特征提取-SAR data decomposition process, decomposition for H, A, alpha component for the SAR images provide more information and is conducive to SAR image feature extraction
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Size: 387072 |
Author: 海燕 |
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Description: SAR数据分解，得到奇次分量、偶次分量、体分量-SAR data decomposition, the odd weight of even weight, body weight
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Size: 311296 |
Author: 海燕 |
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Description: SAR影像单视数据转为多视数据，数据间相互转化，快捷处理SAR数据-Single-look SAR image data into a more visual data, data inter-conversion, fast processing SAR data
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Size: 331776 |
Author: 海燕 |
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Description: NASA-JPL的极化SAR数据格式说明文件。-NASA-JPL polarization SAR data format documentation.
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Size: 269312 |
Author: 陈天 |
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Description: The Alaska SAR Facility provides satellite data, software tools and information to the science community and government operational agencies in support of polar research and earth science.
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Size: 1742848 |
Author: harsha |
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Description: sar回波信号和cs算法 拥有界面可以手动观看回波信号产生，适合初学者-Focusing the parallel bistatic SAR data using the analytic transfer functionin
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Size: 911360 |
Author: zhaohongfang |
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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: SAR数据预处理，实现影响的分块重采样，提高了处理速度-SAR data preprocessing, to achieve effects of block re-sampling to improve the processing speed
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Size: 7985152 |
Author: buqingyuntlh1 |
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Description: 上传的是多极化数据和格式说明，可以用于极化SAR数据处理。提供了极大方便-From the multi-polarization data and format that can be used for polarization SAR data processing. Provides a great convenience
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Size: 64956416 |
Author: dd |
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Description: 用于斜视聚束式SAR成像的非线性频率变标算法，有完整数学模型。-Nonlinear Frequency Scaling Algorithm for High Squint Spotlight SAR Data Processing
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Size: 1369088 |
Author: jimi |
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Description: SAR数据的一些简单介绍，希望对大家有帮助-SAR data, some simple introduction, we want to help
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Size: 87040 |
Author: leilei |
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Description: 利用matlab读取ers1/2sar 数据 代码简洁使用，希望能够起到抛砖引玉的作用-using matlab REDA ers sar data
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Size: 12693504 |
Author: zhongyu |
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Description: Read Matrix for SAR DATa
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Size: 1024 |
Author: Farhad |
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Description: Focus FMCW SAR Data Using the Wavenumber Domain Algorithm
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Size: 1031168 |
Author: jamal |
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Description: SAR数据分解程序，分解为H,A,alpha分量，为SAR影像提供了较多的信息，有利于SAR影像特征提取-SAR data decomposition process, decomposition of H, A, alpha component for SAR images provide more information, in favor of SAR image feature extraction
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Size: 29696 |
Author: 郭赛 |
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