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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: 这个是自己为了娱乐写的一个CS1.5脚本程序！希望大家只用于娱乐不要乱用-This is their entertainment in order to write a script CS1.5! I hope everyone is used only for entertainment not to use
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Size: 5501952 |
Author: xkyangping |
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Description: 偏微分方程的MATLAB解法，很好的电子书籍，很适合自学-MATLAB Solution of Partial Differential Equations, good e-books, it is suitable for self-
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Size: 5130240 |
Author: liuchen |
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Description: 对极化SAR图像进行原始PWF（极化白化滤波）处理，最终可输出一幅图像。
当然，输入输出都是雷达接收到的电场强度信息，要转化为图像还需要将其值转换为255灰度范围内。-Polarization SAR images of the original PWF [polarization whitening filter] treatment, the final output image. Of course, input and output are the radar received electric field strength information, it is necessary to transform the image also needs to be converted to 255 gray value range.
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Size: 1024 |
Author: 郎志超 |
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Description: 对极化SAR图像进行改进的PWF（极化白化滤波）处理，最终可分别输出四个极化通道的图像数据。
输入输出都是雷达接收到的电场强度信息，要转化为图像还需要计算其幅度值并转换到255灰度范围内。-Of polarization SAR images to improve the PWF [polarization whitening filter] treatment, and ultimately can be output separately polarization four-channel image data. Input and output are the radar received electric field strength information, it is necessary to translate into images is also necessary to calculate their magnitude values and converted to 255 gray-scale range.
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Size: 1024 |
Author: 郎志超 |
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Description: 偏微分方程图像处理，图像处理的新工具，重要的研究方向-PDE image processing, image processing, new tools, important research direction
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Size: 6296576 |
Author: zxf |
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Description: 简单的PWF邮件发送客户端,可以实现简单的邮件发送，邮件地址在程序中设置，很好的WPF程序设计思想-Simple PWF-mail client, you can achieve a simple mail, e-mail address set in the program, a very good program design ideas WPF
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Size: 56320 |
Author: Frank |
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Description: AC TO DC CONVERTER USING PWF
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Size: 338944 |
Author: bernardxbox
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Description: DC TO AC CONVERTER USING PWF
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Size: 10105856 |
Author: bernardxbox
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Description: DC TO DC CONVERTER USING PWF
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Size: 540672 |
Author: bernardxbox
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