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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimir: 0040-2508
ISSN On-line: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v69.i8.40
pages 687-698

REDUCTION OF ASPECT DEPENDENT SPECKLE FLUCTUATIONS IN HIGH-RESOLUTION RADAR RANGE PROFILES

J. T. Astola
Tampere University of Technology, Signal Processing Laboratory, P. O. Box 553, FIN-33101, Tampere, Finland
Karen O. Egiazarian
Tampere University of Technology, Signal Processing Laboratory, P. O. Box 553, FIN-33101, Tampere, Finland
P. A. Molchanov
National Aerospace University, Chkalova Str. 17,61070, Kharkiv, Ukraine
V. M. Orlenko
Ivan Kozhedum National Air-Force University of Kharkiv, 77/79, Sumskaya Str., Kharkiv 61023, Ukraine
A. V. Totsky
National Aerospace University (Kharkiv Aviation Institute), 17, Chkalov St., Kharkiv, 61070, Ukraine

RESUMO

This paper deals with the analysis of the variability of high-resolution radar range profiles caused by the changes of aerial target aspect angle regarding to the radar line of sight. An approach based on radar range profiles reconstruction from the averaging of sets of short-time bispectrum estimates is developed and investigated. Results of computer simulations obtained for aerial targets of different types demonstrate that the sensibility of range profile estimates with respect to the target aspect angle changes decreases when the proposed bispectrum-based estimation is used.


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