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A technique has been developed to detect and map fire growth by using a multitemporal multispectral analysis of AVHRR images. The application of this technique allows fire growth nwnitoring. The technique is mainly based on comparison of brightness temperature differences and AVHRR Channels 3 and 4 for successive images. It provides a rapid evaluation of(More)
On 21 July 2001 a number of severe storms developed over the region of Camaguey, Cuba, which were observed by radar. A numerical simulation was performed in order to realistically reproduce the development of the storms observed that day. The mesoscale model MM5 was used to determine the initial, boundary and update conditions for the storm-scale simulation(More)
In the first part of this study, an external 3-D ambient field (3d-field) was used to initiate a simulation (Sim1). In this paper, the influence of the 3-D field in the occurrence of the cloud merger simulated in Sim1 is studied. The surface convergence was very important to supply the lifting necessary for the development of new the convection. The(More)
The scattering properties of discontinuities between arbitary dielectric waveguides is obtained. The cross sections of the inhomogeneous dielectric waveguides are simulated by means of a grid of rectangular pixels enclosed by perfectly conducting boundaries. Consequently, there is not restriction in the cross section shape of the dielectrics as well as in(More)
Refraction index evaluation by means of quasi-normal incidence radiometric technique (CNTRT) was implemented. The theoretical procedure involves Fresnel equations as well as a complete statistic algorithm developed for experimental values treatment. The characteristics of the experimental technique are analyzed in depth and rules for high precision(More)
We present the inverted Pi dielectric waveguide as an alternative for designing tunable microwave devices as well as electromagnetic band gaps structures. Inverted Pi dielectric waveguides in cascade, and with high index contrast, are enclosed by metallic rectangular waveguides. The generalized scattering matrix concept, together with the generalized(More)
Optical sensing properties of cascade planar optical waveguides with high index contrast are demonstrated first time. The electromagnetic performance of photonic crystals obtained by connecting in cascade planar optical waveguides with high index contrast was analyzed. In our case, the periodicity of the lattice is obtained in the substrate, instead of in(More)
The inverted π dielectric waveguide as an alternative for designing tuneable microwave devices as well as electromagnetic band gaps structures is presented. The generalized scattering matrix concept, together with the generalized telegraphist equations formulism and the modal matching technique was implemented for theoretical analysis. This(More)
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