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The dual-use synthetic aperture radar (SAR) ground moving target indication (GMTI) system should display moving targets on a well focused SAR image in real time. The clutter suppression, necessary for increasing the moving target signal to clutter ratio (SCR) and then the probability of detection, is sensitive to channel balance. Adaptive clutter suppression methods aiming at resolving the channel...
This paper investigates the channel equalization problem of airborne multi-channel SAR-GMTI system. A key problem for ground moving target indication is clutter suppression, which is sensitive to the correlation of channels. For the multi-channel system, there are differences among the characteristic of two channels and also the antenna amplitude patterns (phase as well as gain), which worsen the...
Nowadays, SAR interferometry (InSAR) is a technique to generate digital elevation models from space. The phase image unwrapping is the most important step in processing the interferometric SAR data. Goldstein's branch-cut algorithm is the most classical one. It is about the connection of residues with branch-cut lines to neutralize their charges so that the integral path can't stride over the branches...
At present, among the known methods of extracting interferometric phase, some methods developed from spatial spectrum estimation and extracting interferometric phase by MUSIC or TLS-ESPRIT algorithm are being perfected. However these methods can bring on confusion of different scatter centers among interferometric phase due to the lack of measures of mechanism's separation. By calculating the power...
Based on the theory of eigen-decomposition of fully polarimetric synthetic aperture radar (SAR) and scatter criterion clustering method, an unsupervised iteration classification method is proposed. It is simple, flexible and with high precision. Several schemes of the iteration classification method are given in this paper. The characteristic of each scheme is carefully analyzed according to the properties...
At present, SAR interferometry (InSAR) is technique for the generation of digital elevation models from space. The phase image unwrapping is the most important step in processing the interferometric SAR data. Goldstein's branch-cut algorithm is now the most classical one of the known phase unwrapping algorithms. It connects residues with branch-cut lines to neutralize their charges so that the integral...
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