Results 41 to 50 of about 35,368 (282)
The shock-acoustic waves generated by earthquakes [PDF]
, 2000 We investigate the form and dynamics of shock-acoustic waves generated by earthquakes. We use the method for detecting and locating the sources of ionospheric impulsive disturbances, based on using data from a global network of receivers of the GPS ...
Afraimovich, E. L. +3 more
core +4 more sources
Observations of ionospheric disturbances via U-shaped traces on ionograms
Геодинамика и тектонофизика, 2019 The ionospheric vertical sounding is a basic technique for studying the Earth’s ionosphere. Taking into account the fact that conditions for propagation of radio waves depend on the operating frequency, diagnostics of the ionosphere is performed using ...
O. A. Laryunin
doaj +1 more source
Application of an optimal estimation inverse method to GPS/MET bending angle observations [PDF]
, 2001 Palmer et al. [2000] describes an optimal estimation inverse method for radio occultation (RO) bending angle measurements to retrieve simultaneously temperature, humidity, and surface pressure; outlines quality control procedures for retrieved profiles ...
Ahmad +19 more
core +1 more source
Meteorologische Zeitschrift, 2009 Urban air quality assessment requires the knowledge of the temporal and spatial structure of the mixing layer, because this structure controls the vertical dilution of near-surface pollutants.
Stefan Emeis +2 more
doaj +1 more source
Profiling water vapor mixing ratios in Finland by means of a Raman lidar, a satellite and a model [PDF]
Atmospheric Measurement Techniques, 2017 We present tropospheric water vapor profiles measured with a Raman lidar during three field campaigns held in Finland. Co-located radio soundings are available throughout the period for the calibration of the lidar signals.
M. Filioglou +11 more
doaj +1 more source
Радіоелектронні і комп'ютерні системи, 2021 Mathematical models of the fields of stochastic ultra-wideband signals that are necessary for solving problems of aperture synthesis of images using active radar methods are presented.
Valeriy Volosyuk +6 more
doaj +1 more source
Estimation of orographically induced wave drag in the stable boundary layer during the CASES-99 experimental campaign [PDF]
, 2009 This paper addresses the quantification of gravity wave drag due to small hills in the stable boundary layer. A single column atmospheric model is used to forecast wind and temperature profiles in the boundary layer.
Holtslag, A.A.M. +2 more
core +3 more sources
Advanced Engineering Materials, EarlyView.Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt +8 more
wiley +1 more source
A Real-Time Millimeter-Wave Phased Array MIMO Channel Sounder
, 2017 In this paper, we present a novel real-time MIMO channel sounder for 28 GHz. Until now, the common practice to investigate the directional characteristics of millimeter-wave channels has been using a rotating horn antenna.
Bas, C. Umit +7 more
core +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source