Common view is that non-linear interaction between whistler mode signals from a VLF transmitter and energetic electrons can successfully explain the generation of sideband spacings of 1-30 kHz in the magnetosphere. However, VLF transmitter experiments conducted at Siple show that long keydown signals injected into the magnetosphere often generate sidebands as a result of nonlinear interaction w...

Multi-antenna receivers are a key technology for modern communication systems. Signal attenuation in the very low frequency (VLF) channel is serious problem. In addition to high signal attenuation, resulting noise on VLF non-Gaussian. Hence, analyze and address issue of normal operation multi-antenna receiver channel, we must study detection problem multi-dimensional non-Gaussian fading channel...

The purpose of this study was to develop a mathematical model the photoplethysmogram, which can be used test methods that introduce instantaneous phases modulating signals. must reproduce statistical and spectral characteristics real explicitly incorporate signals, so they as reference during testing. Methods. Anacrotic catacrotic photoplethysmogram pulse wave were modeled sum two density distr...

Mounting evidence of chemical disequilibria in the Venusian atmosphere has heightened interest search for life within planet’s cloud decks. Balloon systems are currently considered to be superior class aerial platform extended atmospheric sampling clouds, providing highest ratio science return risk. Balloon-based designs depend heavily on payload mass and target altitudes. We present options co...

The use of natural electromagnetic (EM) emissions in extreme low frequency (ELF) and very (VLF) radio bands for monitoring predicting landslide activity is examined. approach based on measuring EM using receivers subsequent correlation their intensity with the amount character deformation landslide. There are several sources rock environment, but it mostly piezoelectric impulse quartz grains du...

BACKGROUND Renal function is associated with mortality and functional disabilities in stroke patients, and impaired autonomic function is common in stroke, but little is known regarding its effects on stroke patients with renal dysfunction. This study sought to evaluate the association between autonomic function and stroke in patients with renal dysfunction. METHODS This study comprised 232 p...

A spring-fall asymmetry is observed in daytime amplitude values of very low frequency (VLF) radio wave signals propagating over the North Atlantic during 2011–2019. We explore processes behind this by comparing against mesospheric mean temperatures and semidiurnal solar tide (S2) winds. The radiation influence on VLF subionospheric propagation was removed from values, isolating fall-effect. Sim...