M.L. Artemov, O.V. Afanasyev, V.N. Levchenko, I.S. Dmitriev, M.P. Slichenko

In article as maximum likelihood algorithm of detection, an estima tion of a direction of arrival and a stream of capacity of a flat monochromatic radio-wave by a multichannel radio direction finder with any configuration of antenna system is offered. The considered algorithm assumes formation in each supervision of a matrix of channel capacities Pr of pressure on exits of elements the antenna array with calculation of an estimation of amplitude of intensity of a field of a wave in the given supervision and the subsequent summation of the given matrixes in a series of supervision with individual weight factors. Decision function S(θ) depending on the saved up matrix of channel capacities P, a correlation matrix led to exits of antenna system of noise and the peak diagramme of an orientation of antenna system is formed. As much as possible plausible estimation of a direction of arrival of a radio-wave is by means of global maximisation of decision function S(θ). The decision on presence or absence of a plane wave is accepted by result of comparison of the found global maximum of decision function with threshold level. In case of presence of a plane wave the total estimation of amplitude of intensity of a field of a wave by averaging of the estimations received in each supervision is calculated, and characteristics of accuracy of estimations of a stream of capacity and a direction of arrival of a radio-wave are defined. The generated solving rule, fair for any structure and a configuration of antenna system of a direction finder under condition of use of the amplitude diagramme of orientation G(θ) characterising given antenna system.