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Fisheye lens has a big viewing field, with the range between 180° to 270° which works at fixed angle, without spinning. It is widely applied in recent years. However, there is obvious distortion of the image, it is rarely used in the identification of objects. Spherical projection method was used to rectify the image. The method was introduced from the aspects of imaging, projection model, distortion...
To understand the spatial interpolation optimization laws of groundwater depth, two different methods of spatial interpolation are compared: (1) inverse distance weighting (IDW), (2) Ordinary Kriging (OK), using the recorded data of groundwater depth in the Shule River basin, China, in March from 2001 to 2006. The result indicates that the accuracy of the OK is the highest. After exploratory spatial...
In this paper, the authors present a new method of HRR profile formation based on the LFM signal fusion of the multiple radars with multiple frequency bands. The principle of the multiple radars signal fusion improving the range resolution is analyzed. During the fusion process, the B-splines interpolation and an entropy-minimization principle based phase compensation algorithm are applied. The theoretical...
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