S.V. Abyshev¹

1 FSBI HE "MIREA − Russian Technological University" (RTU MIREA) (Moscow, Russia)

Problem Statement. The article considers an algorithm for conjugate estimation of the direction of signal arrival angle. It is proposed to use the maximum number of array elements for the processing of subarrays in the algorithm to estimate the direction of signal arrival angle. The considered conjugate estimation algorithm uses signals from all elements of the antenna array with signal detection. Because the algorithm uses all the received signals, it gives a better signal-to-noise power ratio and better performance than other methods. Such as robust method, minimum dispersion method, and virtual beamforming method. The covariance signal matrix is used to determine the eigenvalues. The least squares method is used to find the elements of eigenvalues. The method of least squares is used to find the direction of the signal arrival angle by calculating the estimation of the covariance matrix from the output signals of the antenna elements of the antenna array with signal detection, decomposition into eigenvalues, calculation of eigenvalues and subsequent determination of the azimuth of the direction of the signal arrival angle. The result of the algorithm using the method is the simulation of signal arrival from several small aircraft. In order to understand the performance of the conjugate estimation algorithm, a simulation of signal arrival from small aircraft using the robust method with maximum overlap and without overlap is given. Thus, the conjugate estimation algorithm shows accurate signal arrival results and satisfies the conditions.

Objective. To study an algorithm for conjugate estimation of the direction of signal arrival angle, from small aircraft.

Result. Simulation of signal arrival from small aircrafts, which shows the performance of the algorithm for conjugate estimation of the direction of signal arrival angle.

Practical significance. It is shown on the basis of simulation that the conjugate estimation algorithm gives better results for determining the direction of signal arrival angle than other methods.

Abyshev S.V. Conjugate estimation of the direction of signal arrival angle. Radiotekhnika. 2021. V. 85. № 4. P. 119−125.  DOI: https://doi.org/10.18127/j00338486-202104-13 (In Russian)

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