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Toplam kayıt 10, listelenen: 1-10
Nvis Hf Signal Propagation In Ionosphere Using Calculus Of Variations
(2019)
Modeling Near Vertical Incidence Sounding (NVIS) High Frequency (HF) signal propagation in the ionosphere is important. Because, ionosondes which are special types of radars probing the ionosphere with certain HF frequencies ...
Lonolab-Map: An Automatic Spatial Interpolation Algorithm for Total Electron Content
(Tubitak Scientific & Technical Research Council Turkey, 2018)
Investigation of the variability of total electron content (TEC) is one of the most important parameters of the observation and monitoring of space weather, which is the main cause of signal disturbance in space-based ...
Estimation Of Hmf2 And Fof2 Communication Parameters Of Ionosphere F2-Layer Using Gps Data And Iri-Plas Model
(Ieee-Inst Electrical Electronics Engineers Inc, 2013)
F2-layer is the most important and characteristic layer of the ionosphere in the propagation of high frequency (HF) waves due to the highest level of conductivity in the propagation path. In this study, the relation of ...
Regional Model-Based Computerized Ionospheric Tomography Using Gps Measurements: Ionolab-Cit
(Amer Geophysical Union, 2015)
Three-dimensional imaging of the electron density distribution in the ionosphere is a crucial task for investigating the ionospheric effects. Dual-frequency Global Positioning System (GPS) satellite signals can be used to ...
Tomographic Reconstruction Of The Ionospheric Electron Density As A Function Of Space And Time
(Elsevier Sci Ltd, 2009)
Electron density distribution is the major determining parameter of the ionosphere. Computerized Ionospheric Tomography (CIT) is a method to reconstruct ionospheric electron density image by computing Total Electron Content ...
Online User-Friendly Slant Total Electron Content Computation From Iri-Plas: Iri-Plas-Stec
(Amer Geophysical Union, 2014)
Slant total electron content (STEC), the total number of free electrons on a ray path, is an important space weather observable. STEC is the main input for computerized ionospheric tomography (CIT). STEC can be estimated ...
Multipath Separation-Direction Of Arrival (Ms-Doa) With Genetic Search Algorithm For Hf Channels
(Elsevier Sci Ltd, 2009)
Direction-of-Arrival (DOA) defines the estimation of arrival angles of an electromagnetic wave impinging oil a set of sensors. For dispersive and time-varying HF channels, where the propagating wave also suffers from the ...
Investigation of Total Electron Content Variability Due to Seismic and Geomagnetic Disturbances in the Lonosphere
(Amer Geophysical Union, 2010)
Variations in solar, geomagnetic, and seismic activity can cause deviations in the ionospheric plasma that can be detected as disturbances in both natural and man-made signals. Total electron content (TEC) is an efficient ...
Lonolab-Ray: A Wave Propagation Algorithm for Anisotropic and Inhomogeneous Ionosphere
(Tubitak Scientific & Technical Research Council Turkey, 2017)
A high-frequency (HF) radio wave propagation model based on ray tracing for anisotropic, inhomogeneous, and time-varying ionosphere is developed to form the basis for a user-friendly modular algorithm. The algorithm ...
Regional Ionospheric Trend Statistics: Ionolab-Pdf
(Tubitak Scientific & Technical Research Council Turkey, 2017)
The ionosphere plays an important role for HF bands, space-based positioning systems, satellite communication, and propagation. The variability of the ionosphere has a complex spatiotemporal characteristic, which depends ...