Applying the variational method to the problem of estimating signal parameters in passive radar with external illumination

Autor:	N. G. Parkhomenko, V. N. Shevchenko, V. S. Onishchenko, A. A. Peretyat’ko, Ya. A. Reizenkind
Rok vydání:	2014
Předmět:	business.industry Pulse-Doppler radar Acoustics Condensed Matter Physics Signal Passive radar Continuous-wave radar Overdetermined system Bistatic radar Optics Radar engineering details Radar imaging Electrical and Electronic Engineering business Instrumentation Mathematics
Zdroj:	Optoelectronics, Instrumentation and Data Processing. 50:49-53
ISSN:	1934-7944 8756-6990
DOI:	10.3103/s8756699014010063
Popis:	A passive bistatic radar comprising an illumination source and two antennas for receiving the direct signal from the illumination source and a mixture of signals scattered by moving objects is considered. The problem of estimating the amplitudes, delays, and Doppler shifts of scattered signals is formulated as the problem of minimizing the residual of an overdetermined system of linear algebraic equations. An additional condition is imposed on the unknown amplitude to provide sparsity of the desired signal amplitudes in the delay-Doppler shift coordinates. The problem is solved by the variational method. The method was successfully tested using real data.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bf3854e0037e2edeeb66fd8062a80f40 https://doi.org/10.3103/s8756699014010063 Zobrazit plný text záznamu Full text from SpringerLink