loading
Atmospheric vertical profiles obtained by Lidar over Évora during CAPEX project
2007 Edition, July 1, 2007 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

CAPEX is a European project to investigate aerosol particles, radiation, cloud properties, precipitation and radioactivity over Portugal. During the campaign, carried out during the first fortnight June 2006 at Evora, Portugal (38deg34' N, 7deg54' W, 293 m...

Vertical Motions in the Lower Ionosphere and Dynamics of the Ionospheric Plasma
2019 Edition, Volume 1, July 1, 2019 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper presents results of a measurement of the vertical plasma motion velocity in the lower ionosphere by the method of the resonant scattering of radio waves on artificial periodic irregularities created by powerful HF radio emission of the SURA heating facility. Altitude...

Estimation of Microwave Atmospheric Transmittance Over China
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Atmospheric transmittance is an important factor for atmospheric correction in the inversion of land surface parameters. Under nonprecipitating conditions, microwave atmospheric transmittance in the X-, Ku-, and Ka-bands is mainly determined by oxygen, water vapor, and...

Physics-based Prediction of Atmospheric Transfer Characteristics at THz Frequencies
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The amplitude and phase distortion of radar echo signal will cause the emergence of undesirable ghost scattering points, which degrade the quality of Terahertz (THz) radar images. In this paper, a physics-based procedure is presented to predict the atmospheric attenuation and dispersion...

A Simplified Model to Predict Oxygen Attenuation on Earth-space Links
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A simplified yet accurate model to predict oxygen attenuation for Earth-space applications (10-350 GHz range) is presented in this contribution. The model is developed by taking advantage of an extensive set of high-resolution radiosonde observations (RAOBS) collected in several sites...

A Case Study on the Correction of Atmospheric Phases for SAR Tomography in Mountainous Regions
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Synthetic aperture radar (SAR) tomography with repeat-pass acquisitions generally requires a priori phase calibration of the interferometric data stack by compensating for the atmosphere-induced phase delay variations. These variations act as a disturbance in tomographic focusing. In...

VO₂ Phase-Transition-Based Vertical MEMS Microactuators
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A vertical multilayer VO₂ MEMS microactuator device is reported in this work. A 150-nm-thick VO₂ layer is sandwiched between the top Pt and bottom indium tin oxide (ITO) electrodes. An equivalent thermal circuit is developed with a thermal response time of 0.39 ms. With the...

Research on the Gas Effect of Octafluorocyclobutane Plasma Jet at Atmospheric Pressure for Silicon Etching
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The capacitively coupled radio frequency double-pipe plasma discharge jet is used for the etching process. An argon carrier gas is fed through the atmospheric-pressure plasma source; octafluorocyclobutane (C₄F₈) etch gas is injected into the plasma. Etchings were carried out on a crystalline...

Radiometry Calibration With High-Resolution Profiles of GPM: Application to ATMS 183-GHz Water Vapor Channels and Comparison Against Reanalysis Profiles
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The reanalysis data produced by numerical weather prediction (NWP) models and data assimilation have been widely used for radiometer calibration. They provide atmospheric profiles that are necessary for radiative transfer simulation against observation. However, there are...

Mitigation of Soiling by Vertical Mounting of Bifacial Modules
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We experimentally explored vertical mounting of bifacial modules of different bifacialities for mitigating soiling in Mumbai, where the dust accumulation rate in terms of energy loss per day can be as much as 0.45%. Bifaciality is commonly referred to the ratio of the back side value to the...

Advertisement