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Complex image registration is a crucial step in interferometric synthetic aperture sonar (InSAS) signal processing. The registration quality directly influences the quality of interferogram and subsequent reconstruction of digital elevation model (DEM). After the control points are determined, a geometric transformation procedure is needed in image registration. The traditional geometric transformation...
In this paper a kind of phase unwrapping-free digital elevation model(DEM) reconstruction method of interferometric synthetic aperture sonar(InSAS) is described. Firstly, a new method of coarse DEM generation is proposed. In the method, a pair of images are divided into small blocks and resampled to a set of reference planes. The height of each block pair is estimated by measuring the maximum coherence...
In this paper, an extended COvariance Matching Estimation Techniques-Extend Invariance Principle (COMET-EXIP) method is proposed to estimate interferometric synthetic aperture radar or interferometric synthetic aperture sonar (InSAS) interferometric phase in the presence of large coregistration errors, even up to one pixel. First, the extended COMET-EXIP method is presented for the application of...
Simulation of interferometric synthetic aperture sonar raw signal pairs is a very useful tool for mission planning and for testing of processing algorithms. An efficient Interferometric synthetic aperture sonar (InSAS) raw signal simulator based on pointer scatterer model has been recently presented. The simulator is founded on a two-scale composite acoustic model of a surface scattering and the surface...
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