Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Печать: 0040-2508
ISSN Онлайн: 1943-6009

Выпуски:
Том 78, 2019 Том 77, 2018 Том 76, 2017 Том 75, 2016 Том 74, 2015 Том 73, 2014 Том 72, 2013 Том 71, 2012 Том 70, 2011 Том 69, 2010 Том 68, 2009 Том 67, 2008 Том 66, 2007 Том 65, 2006 Том 64, 2005 Том 63, 2005 Том 62, 2004 Том 61, 2004 Том 60, 2003 Том 59, 2003 Том 58, 2002 Том 57, 2002 Том 56, 2001 Том 55, 2001 Том 54, 2000 Том 53, 1999 Том 52, 1998 Том 51, 1997

Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v78.i3.10
pages 191-210

WAYS OF EXTRACTION OF MAXIMUM INFORMATION FROM IMAGES OF ASTRONOMICAL OBJECTS

Y. V. Kornienko
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12 Academician Proskura St., Kharkiv 61085, Ukraine
Sergey I. Skuratovskiy
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12 Academician Proskura St., Kharkiv 61085, Ukraine

Краткое описание

Generally, the information obtained as a result of a physical experiment proves to be partially corrupted due to action of various noise factors. The nature of these factors is dependent on the experimental conditions however, approaches to reducing their influence prove to be rather similar. The investigations carried out by the team of image processing of the Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine (IRE NASU) over the last ten years were oriented toward search for methods of extraction of maximum information from astronomical observations and space experiments. The investigations were conducted in several directions. For observations from the Earth's surface, the problem consisted in removing atmospheric phase distortions and synthesizing antenna configurations for telescopes and interferometers operating in various ranges of the electromagnetic wave spectrum. In the case of space astronomy, the efforts were concentrated at optimal interpretation of their results, in particular, at obtaining the planet relief and image processing with the effect of gravitational lensing. The common feature of the developed techniques is the use of the statistical approach, i.e., application of the mathematical statistics and theory of optimal statistical solutions. The present paper discloses both the general features of its approach and specific features of the obtained solutions in the case of particular problems of astronomical image processing. As a result of the performed investigation several techniques have been developed, including the method of Fourier component total phase accumulation for suppression of the atmospheric phase noise, the technique of optimum estimation of the point source intensity observed through the gravitational field of a distant galaxy, the method of accounting the altimetric information in photoclinometric determining the planet surface relief, and a number of techniques of designing antenna configurations for telescopes and interferometers. The statistical approach to processing experimental data has allowed using the information contained in a series of observations of an astronomical object for reconstruction of a single but more accurate its image. Owing to this it has become possible to unite in an optimal way the information contained in the surface images and altimetric data to obtain the surface relief with a high resolution and referencing to actual altitude magnitudes. In the case of treating gravitational mirages it has become possible to separate the observed source from the background. The obtained results demonstrate that the Bayesian statistical approach is a powerful tool in the researcher hands.


Articles with similar content:

Radar Tracking of Low Altitude Targets over the Sea Surface
Telecommunications and Radio Engineering, Vol.66, 2007, issue 19
V. B. Razskazovsky, Yu. A. Pedenko
An Algorithm for Adaptive Correction of Radar Images
Telecommunications and Radio Engineering, Vol.58, 2002, issue 7&8
O. V. Sytnik
A TECHNIQUE FOR MEASURING COORDINATES OF MOVABLE OBJECTS BY VIDEO PULSE RADARS
Telecommunications and Radio Engineering, Vol.77, 2018, issue 15
G. P. Pochanin, P. V. Kholod, S. A. Masalov, V. P. Ruban, O. V. Sytnik
RADAR ELEVATION ANGLES MEASUREMENTS OF LOW-ALTITUDE TARGETS OVER THE SEA BY ROOT-MUSIC METHOD UNDER INTERFERENCE FROM MULTIPATH AND THERMAL NOISE OF DIRECTION FINDER
Telecommunications and Radio Engineering, Vol.75, 2016, issue 10
Yu. A. Pedenko
Joint Solution of the Problems of Navigation, Communication, and Location for the Services that Control En-Route and Off-Route Aircraft Traffic
Telecommunications and Radio Engineering, Vol.62, 2004, issue 1-6
A. V. Keystovich