– Usually only GPR reflection amplitudes are imaged, while data contain far more information. Multi-trace coherency visualisations offer new insights into structures otherwise hardly visible. Image fusing permits the combined display of different attributes (amplitude and coherency).

-This paper presents the application to the identification of coherent generators in a power system based on the fuzzy c-means clustering. In view of the conceptual appropriateness and computational simplicity, the fuzzy c-means give a fast and flexible method for clustering analysis. At first, the coherency measures are derived from the time-domain responses of generators to reveal the relatio...

This essay introduces a new featured section, to be published in Small Axe annually, that explores the critical vocabulary of field Caribbean studies.

A theoretical model is developed to describe the interferometric coherency between pairs of SAR images of rough soil surfaces. The model is derived using a dyadic form for surface reflectivity in the Kirchhoff approximation. This permits the combination of Kirchhoff theory and spotlight synthetic aperture radar (SAR) image formation theory. The resulting model is used to describe the interferom...

The coherence of an optical beam having multiple degrees of freedom (DoFs) is described by a coherency matrix G spanning these DoFs. This optical coherency matrix has not been measured in its entirety to date--even in the simplest case of two binary DoFs where G is a 4 × 4 matrix. We establish a methodical yet versatile approach--optical coherency matrix tomography--for reconstructing G that ex...

HEIGHTS WITH POLINSAR DATA Lulu Tan , Ruliang Yang, Weidong Yu 1 Institute of electronics, Chinese Academy of Sciences, China; 2 Graduate University of Chinese Academy of Sciences, China. Email: [email protected]; [email protected]; Polarimetric synthetic aperture radar interferometry (PolInSAR) is a perspective remote sensing technique that has been intensively used for extracting forest ...

Hierarchical forecasting has been receiving increasing attention in the literature. The notion of coherency is central to this, which implies that hierarchical time series follows some linear aggregation constraints. This notion, however, does not take several modelling uncertainties into account. We propose redefine as stochastic. allows accommodate overlooked forecast reconciliation. show ana...