Zobrazeno 1 - 10
of 26
pro vyhledávání: '"A. F. Pimenov"'
Autor:
A. S. Popov, V. F. Pimenov
Publikováno v:
Radiophysics and Quantum Electronics. 62:627-636
We present the results of numerical simulation and comparison of characteristics of optimal spatial selection of a signal and two correlated interferences in a linear equidistant antenna array that is optimal according to the criterion of minimum sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cdcc3d50ee861cc87cf8baf21a65f6c
https://doi.org/10.1007/s11141-020-10008-0
https://doi.org/10.1007/s11141-020-10008-0
Publikováno v:
Astronomical & Astrophysical Transactions. 20:287-290
Superluminal parsec scale components of jets in an AGN are considered as being parts of a shock front excited by a flare (explosion) in the vicinity of the nucleus and moving at small angles to the direction of sight. The influence of laminar flows (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f79b61d36709c56334ca072c039faae7
https://doi.org/10.1080/10556790108229712
https://doi.org/10.1080/10556790108229712
Publikováno v:
Radiophysics and Quantum Electronics. 41:600-609
The average reflected field and the second moment of the scattered field of the main polarization are found and analyzed in the approximation of a small jump of the dielectric constant when a horizontally polarized wave is reflected by a two-layer me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fbdf056c4631ac14f54404789f5426e
https://doi.org/10.1007/bf02675847
https://doi.org/10.1007/bf02675847
Autor:
N. A. Stepanova, S. F. Pimenov
Publikováno v:
Radiophysics and Quantum Electronics. 40:485-492
Radiowave scattering by a two-layered medium with a rough boundary is studied in the Kirchhoff approximation. We consider the case of oblique incidence of waves and mean square heights of the upper boundary roughnesses, which are nonsmall compared wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5e6b2275cf6bec9868d26b4fb184837
https://doi.org/10.1007/bf02675924
https://doi.org/10.1007/bf02675924
Autor:
V. M. Kontorovich, S. F. Pimenov
Publikováno v:
Solar Physics. 172:93-101
The shock front (SF) propagation in the solar atmosphere with a power-law decrease of density is studied in the Kompaneets approximation. It is shown that the SF part moving from the Sun in the radial direction speeds up at the exponent n > 3 and slo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::386c968761517213f71d37b4217a3f17
https://doi.org/10.1023/a:1004997513672
https://doi.org/10.1023/a:1004997513672
Autor:
M. A. Rudenko, S. F. Pimenov
Publikováno v:
Radiophysics and Quantum Electronics. 38:409-416
An analytical expression for the two-frequency correlation function of reflected radiation\(p \equiv \equiv \left\langle {\dot U(w_1 )\dot U(w_2 )} \right\rangle\) is derived in the framework of the Kirchhoff approximation, assuming that the mean squ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3403e7e6d9471d15480dc8cad5d3a030
https://doi.org/10.1007/bf01060454
https://doi.org/10.1007/bf01060454
Autor:
M. A. Rudenko, S. F. Pimenov
Publikováno v:
Radiophysics and Quantum Electronics. 38:274-283
The scattering of radiowaves by a multilayered medium with large-scale roughnesses of the boundaries and inhomogeneities of the permittivity of the layers is theoretically studied. It is shown that there are different mechanisms resulting in the osci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a56dfb5be5dd4c591c204a1d9dcd641a
https://doi.org/10.1007/bf01038859
https://doi.org/10.1007/bf01038859
Autor:
N. A. Stepanova, S. F. Pimenov
Publikováno v:
Radiophysics and Quantum Electronics. 37:959-969
Using perturbation theory, we have investigated the electromagnetic field reflected by a two-layer medium with rough boundaries. To first order in perturbation theory with respect to the asperities on the boundaries, we consider the scattering fading
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ea35cc98c989d06b0a1478a6cbdb8a9
https://doi.org/10.1007/bf01056148
https://doi.org/10.1007/bf01056148
Autor:
S. F. Pimenov, M. B. Éntél
Publikováno v:
Journal of Applied Mechanics and Technical Physics. 34:821-824
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a7eccc482cd76262d1e545d135eb248
https://doi.org/10.1007/bf00852085
https://doi.org/10.1007/bf00852085
Autor:
S. F. Pimenov, M. A. Rudenko
Publikováno v:
Radiophysics and Quantum Electronics. 35:187-193
Radio-wave scattering by a thin layer with irregular boundaries is examined within the framework of a Kirchhoff approximation. Analytic expressions for the coherent and incoherent components of reflected power are derived and studied for an arbitrary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21d5423218dac2b6864b25e28e097c68
https://doi.org/10.1007/bf01038025
https://doi.org/10.1007/bf01038025