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fringe line
相关语句
  相似匹配句对
     On line
     行业在线
短句来源
     On-line
     行业在线
短句来源
     The whole on-line monitoring system has been capable of fringe running.
     整个在线监测系统已经能够初步运行。
短句来源
     On-line measurement of fringe space in double beam interference
     双光束干涉条纹间距的在线测量
短句来源
     On the Fringe Space
     论边缘空间
短句来源
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  fringe line
In this paper, a new mathematical formulation has been developed for the estimation of the two-dimensional orbital shift of INSAR based on the fringe line pattern in the interferogram of flat earth.
      
The phase is then unwrapped by adding a multiple of 2 each time the integration path crosses a fringe line.
      


The laser speckle interferometry is adopted to record the displacements of rigid body in the test of locating accuracy for kinematic support, thus, the six freedom divisions of displacements of rigid body. Its image processing techniques are that use thin laser to irradiate the speckle image processed, hereby, Youngs fringe image is obtained in computer. The fringe image is processed with serial image processing techniques as filter, intensity, extracting of fringe line of center, the spacing of fringe...

The laser speckle interferometry is adopted to record the displacements of rigid body in the test of locating accuracy for kinematic support, thus, the six freedom divisions of displacements of rigid body. Its image processing techniques are that use thin laser to irradiate the speckle image processed, hereby, Youngs fringe image is obtained in computer. The fringe image is processed with serial image processing techniques as filter, intensity, extracting of fringe line of center, the spacing of fringe in X, Y and Z three-dimensional direction of Youngs fringe image are extracted. Then the displacement information of rigid body in specific flat surface are calculated, its accuracy error arrives at 0.4靘. The experimental result shows that the accuracy of locating test for kinematic support is improved with the serial techniques.

运动学支撑定位精度检测,采用激光散斑干涉法记录被测体特定平面的位移,以获得6自由度刚体位移分量。其图象处理技术是用细激光束对处理好的散斑图进行照射以获取图象(即杨氏条纹图),通过增强、滤波、提取条纹中心线等技术对获取的图象进行处理,提取出杨氏条纹图象在X、Y、Z三个方向的条纹间距,从而分析出被测物体特定平面内的位移信息,精度达到0.4μm。实验证明,该技术提高了运动学支撑定位检测精度。

A method for phase unwrapping of interferometric SAR is described in this paper. First SAR image edge detection techniques are used to find the location of the fringe lines in the interferometric phase image. In order to improve the accuracy of the fringe detection, median filter and the method of relative mean gradient of gray scale are used. Then the fringe detection and fringe tracking to improve the image are combined. Two thresholds, both high and low are used to detect the fringe....

A method for phase unwrapping of interferometric SAR is described in this paper. First SAR image edge detection techniques are used to find the location of the fringe lines in the interferometric phase image. In order to improve the accuracy of the fringe detection, median filter and the method of relative mean gradient of gray scale are used. Then the fringe detection and fringe tracking to improve the image are combined. Two thresholds, both high and low are used to detect the fringe. By the method for phase correcting by setting reference phase, some phase leap points are corrected. The method given in this paper has advantages of stability and less error. By using the L band data of SIR-C of the Three-Gorge area of China, the data of phase unwrapping is obtained by the method.

相位解模糊是干涉合成孔径雷达三维成像的关键技术。基于边缘检测算法确定干涉图中干涉纹的位置来实现干涉相位的解模糊。为了提高干涉纹的检测精度 ,将纹线检测和纹线跟踪相结合 ,并采用了中值滤波和相对平均灰度梯度法进一步减小噪声。该方法具有无积累误差且稳定性好的优点。利用三峡地区的L波段SIR C并行轨道数据 ,运用上述方法实现了相位解模糊 ,获得了比较满意的相位展开图

A method for phase unwrapping of interferometric SAR was described in this paper. Firstly, we used SAR image edge detection techniques to find the location of the fringe lines in the interferometric phase image. Secondly, we applied the median filter and the method of relative mean gradient of gray scale to improve the accuracy of the fringe detection with a combination of the fringe detection and fringe tracking. We used two thresholds, both high and low, to detect the fringe....

A method for phase unwrapping of interferometric SAR was described in this paper. Firstly, we used SAR image edge detection techniques to find the location of the fringe lines in the interferometric phase image. Secondly, we applied the median filter and the method of relative mean gradient of gray scale to improve the accuracy of the fringe detection with a combination of the fringe detection and fringe tracking. We used two thresholds, both high and low, to detect the fringe. By setting the reference phase in the method of phase correcting, we corrected some phase leap points. Finally, a good result of the phase unwrapping is obtained on the basis of the L band data of SIR-C of the Three-Gorge area of China, this shows the advantages of stability and less error of the presented method.

给出了一种干涉合成孔径雷达相位解模糊方法 ,该方法利用边缘检测算子确定干涉图中干涉纹的位置。为了提高干涉纹的检测精度 ,将纹线检测和纹线跟踪相结合 ,并采用了中值滤波和相对平均灰度梯度法 ,该方法具有无积累误差且稳定性好的优点。利用三峡地区的L波段SIR C并行轨道数据 ,运用上述方法得到了解模糊的相位图和局部区域的相对地形图 ,获得了比较满意的结果。

 
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