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- Publications
- Influence
Large Scale Assessment of Ka/Q band atmospheric channel across Europe with ALPHASAT TDP5: A new propagation campaign
- S. Ventouras, F. Fontán, +7 authors A. Martelucci
- Environmental Science
- 10th European Conference on Antennas and…
- 10 April 2016
The ever growing demand for higher data rates in satellite based services along with the congestion of the lower part of the frequency spectrum has led to the migration of new services to higher… Expand
Two XPD frequency scaling models using quasi-physical parameters to characterize Earth satellite propagation channel
Attenuation and depolarisation of the tropospheric propagation channel are limiting factors conditioning link availability for systems using frequency reuse. The depolarisation behaviour of the… Expand
Quantification and mapping of urban fluxes under climate change: Application of WRF‐SUEWS model to Greater Porto area (Portugal)
- S. Rafael, H. Martins, +5 authors M. Lopes
- Environmental Science, Medicine
- Environmental research
- 1 May 2017
&NA; Climate change and the growth of urban populations are two of the main challenges facing Europe today. These issues are linked as climate change results in serious challenges for cities. Recent… Expand
Thermal model for optical fiber coating under tight bending diameters
- P. André, A. Rocha, F. Domingues, A. Martins
- Materials Science
- OECC Technical Digest
- 5 July 2010
In this work we investigate the temperature variation of optical fibers in the presence of high optical power propagation and tight bending. A theoretical model for the optical fiber coating… Expand
Evaluation of the fuse effect propagation in networks infrastructures with different types of fibers
- P. André, M. Facão, A. Rocha, P. Antunes, A. Martins
- Materials Science
- Conference on Optical Fiber Communication (OFC…
- 21 March 2010
The evaluation of the fuse effect propagation in fiber networks is analyzed. We show a relation between the void interval, the power density and the fused effect velocity for different types of… Expand
Simulation of fiber fuse effect propagation
- A. Rocha, M. Facão, A. Martins, P. André
- Materials Science
- 3rd ICTON Mediterranean Winter Conference (ICTON…
- 1 December 2009
In this work, we present the simulation results of the fiber fuse effect propagation, using a one-space-dimensional model. This approach has the advantage of reducing the simulation time. The… Expand
Separation of rain and ice contributions for depolarization at Ka band
- A. Rocha, Flávio Jorge
- Geology
- 7th European Conference on Antennas and…
- 8 April 2013
The paper addresses the separation of ice and rain contributions for crosspolar discrimination in Earth Satellite slant path Satellite-Earth propagation channel using single polarized crosspolar… Expand
Raman amplification in high 10 Gbit/s and 40 Gbit/s packet optical networks
- C. Reis, A. Rocha, B. Neto, N. Wada, P. André
- Materials Science
- 2nd ICTON Mediterranean Winter
- 1 December 2008
Packet traffic will dominate the future optical networks. In this work we experimentally access the impact of Raman amplification on 10 Gbit/s and 40 Gbit/s packet traffic performances. For a 10… Expand
Earth-satellite ice depolarization revisited: New data
- A. Rocha, R. Teixeira
- Environmental Science
- First European Conference on Antennas and…
- 1 November 2006
Depolarization has not been seen as an important impairment for Ka band (and above) telecommunication systems due to increased rain attenuation with respect to Ku-band. The most important databases… Expand
Halting the fuse discharge propagation using optical fiber microwires.
- A. Rocha, G. Fernandes, +4 authors P. André
- Materials Science, Medicine
- Optics express
- 10 September 2012
We report and analyze the halting of the fuse effect propagation in optical fiber microwires. The increase of the mode field diameter in the tapered region decreases the optical intensity resulting… Expand