The Algorithm of Angular Superresolution Using the Cholesky Decomposition and its Implementation Based on Parallel Computing Technology
https://doi.org/10.18255/1818-1015-2022-1-6-19
Abstract
An algorithm of angular superresolution based on the Cholesky decomposition, which is a modification of the Capon algorithm, is proposed. It is shown that the proposed algorithm makes it possible to abandon the inversion of the covariance matrix of input signals. The proposed algorithm is compared with the Capon algorithm by the number of operations. It is established that the proposed algorithm, with a large dimension of the problem, provides some gain both when implemented on a single-threaded and multithreaded computer. Numerical estimates of the performance of the proposed and original algorithm using parallel computing technology CUDA NVidia are obtained. It is established that the proposed algorithm saves GPU computing resources and is able to solve the problem of constructing a spatial spectrum with an increase in the dimension of the covariance matrix of input signals by almost two times.
Keywords
digital array antennas,
Capon super-resolution algorithm,
Cholesky decomposition,
bordering method,
parallel computing
MSC2020: 78A50, 78M50, 68W10
About the Authors
Sergey E. Mishchenko
Rostov-on-Don Institute of Radiocommunications
Russian Federation
Russian Federation
Nikolay V. Shatskiy
Academician A. L. Mints Radiotechnical Institut
Russian Federation
Russian Federation
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For citations:
Mishchenko S.E., Shatskiy N.V. The Algorithm of Angular Superresolution Using the Cholesky Decomposition and its Implementation Based on Parallel Computing Technology. Modeling and Analysis of Information Systems. 2022;29(1):6-19. (In Russ.) https://doi.org/10.18255/1818-1015-2022-1-6-19
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