Temporal Spectrum of a Scattered Electromagnetic Waves in the Conductive Collision Turbulent Magnetized Plasma

Abstract

Using WKB method the peculiarities of the temporal spectrum of an ordinary and extraordinary electromagnetic wave scattered in a weakly randomly inhomogeneous three-dimensional nonstationary and conductive magnetized plasma are investigated. On the basis of the stochastic differential transport equation for the frequency fluctuation the broadening and the displacement of the temporal spectrum for both waves are obtained for the polar terrestrial ionosphere. These statistical characteristics contains anisotropic parameters: velocity of a plasma stream, conductivities of the ionosphere, elongated electron density irregularities are characterized by the anisotropy factor and inclination angle with respect to the geomagnetic lines of forces. The analysis of the power spectrum of the waves as a function of the propagation distance and the nondimensional frequency parameter containing the carrier frequency and characteristic temporal scale of electron density fluctuations are carried out. Analytical and numerical calculations have shown that the terrestrial conductivity and anisotropy factors exert a substantial influence on evaluation of the temporal spectrum than the inclination angle. It was found that the wave spectrum increases initially as the square root of the propagation distance, but at large distances it approaches a limiting value. Statistical moments of a scattered ordinary and extraordinary waves do not depend on an absorption sign and valid for both absorptive and active media.

Scintillation Level of Scattered Radio Waves in the Equatorial Ionosphere

“…Calculation of the statistical moments of scattered RWs in the equatorial ionosphere was considered in the studies of Jandieri. [10,11] . The morphology of scintillations was described by second order statistical moments of scattered RWs.…”

Statistical Characteristics of the Temporal Spectrum of Scattered Radiation in the Equatorial Ionosphere

“…Generally, the propagation of a wave with a complex spectral structure continuously changes its spectrum. The features of the temporal spectrum in the polar ionosphere have been considered in the study by Jandieri et al [11] .…”

Identifikasi Lokasi Terbaik Penggunaan Data Satelit Himawari-8 Dalam Estimasi Curah Hujan Berdasarkan Permasalahan Paralaks Dan Suhu Puncak Awan (Studi Kasus Di Wilayah Indonesia Bagian Barat)

“…Daerah Indonesia bagian barat dipilih karena memiliki letak geografis yang jauh dari titik 140,7˚ BT atau orbit satelit Himawari-8 yang berada pada Indonesia bagian timur yang berarti permasalahan paralaks muncul dalam proses pengamatan data satelit Himawari-8 karena semakin jauh jarak objek pengamatan dengan satelit, maka akan semakin besar juga kesalahan paralaksnya dikarenakan sisi bidang miring antara satelit dan objek pengamatan semakin jauh juga [9].…”