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Polarimetric SAR interferometry (POLINSAR) is a very promising technique by combining polarimetric technique and interferometric technique. It can be applied to the area of remote sensing and measurement of structure over forest terrain. At present, many POLINSAR systems were developed, and the first POLINSAR prototype in China is also developed by 38th Research Institute of CETC. Lots of data are...
Point targets such as corner reflectors are the most widely used for synthetic aperture radars (SAR) calibrations because of their high radar cross section (RCS) and wide RCS pattern. Firstly, the coordinate frame and corresponding angles are introduced about the triangular trihedral corner reflector. Then, the relationship between RCS of the trihedral corner reflector and its attitude is simulated...
Radiometric calibration of synthetic aperture radar (SAR) is an important work to relate pixel values to the backscattering coefficient of ground targets. SAR external calibration using point targets and internal calibration using system generated calibration signals can monitor the SAR system transfer function. To improve calibration precision, some efficient calibration techniques are introduced...
Line target recognition in discrete space is a difficulty in the field of image processing. Line features in the scene include tracks, roads, rivers, bridges and field boundaries. Usually, target features include amplitude, histogram and statistics characterizations. However, these features are insufficient to describe a line target for a practical image. Utilizing the geometry of target, we present...
Aim at multiplicative speckle noise and little difference among targets in synthetic aperture radar (SAR) images, a target classification algorithm is proposed based on C-Means and support vector machines (SVMs). Its front part adopts a C-Means clustering method to classify targets and suppress speckle noise in feature space, and its back part adopts an SVM classifier to improve classification accuracy...
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