. "The article deals with an omnidirectional multi-lobe passive direction finder (PDF) that uses the modified Butler matrix operation algorithm and a digital amplitude direction finding method for the direction of arrival determination of the signal of interest. The article brings a concept of the PDF with the multi-lobe circular antenna array (CAA) for the omnidirectional interception of signals and results of the DOA determination obtained with the experimental CAA. These practical results of measuring with experimental CAA are compared with the theoretical results obtained by means of mathematical models of the PDF based on an approximation of real antenna patterns. To approximate the real antenna pattern of CAA antenna elements, an appropriate form of the Gaussian curve is used."@en . . . . "16"^^ . . . . . . "276615" . . . . . "[D0BC191529FF]" . "Omnidirectional multi-lobe passive direction finder with modified Butler matrix algorithm using" . "Ho\u0161ko, Eduard" . . "RIV/60162694:G43__/10:00420799" . "CZ - \u010Cesk\u00E1 republika" . "RIV/60162694:G43__/10:00420799!RIV11-MO0-G43_____" . "2" . "Vesel\u00FD, Ji\u0159\u00ED" . "Z(MO0FVT0000402)" . . "G43" . "The article deals with an omnidirectional multi-lobe passive direction finder (PDF) that uses the modified Butler matrix operation algorithm and a digital amplitude direction finding method for the direction of arrival determination of the signal of interest. The article brings a concept of the PDF with the multi-lobe circular antenna array (CAA) for the omnidirectional interception of signals and results of the DOA determination obtained with the experimental CAA. These practical results of measuring with experimental CAA are compared with the theoretical results obtained by means of mathematical models of the PDF based on an approximation of real antenna patterns. To approximate the real antenna pattern of CAA antenna elements, an appropriate form of the Gaussian curve is used." . "Advances in Military Technology" . "digital amplitude direction finding method; direction of arrival determination; modified Butler matrix operation algorithm; multi-lobe circular antenna array; omnidirectional direction finding"@en . "5" . "1802-2308" . . "Omnidirectional multi-lobe passive direction finder with modified Butler matrix algorithm using"@en . . "2"^^ . . "Omnidirectional multi-lobe passive direction finder with modified Butler matrix algorithm using" . "2"^^ . "Omnidirectional multi-lobe passive direction finder with modified Butler matrix algorithm using"@en .