Study of root-MUSIC method on the problem of elevation angles estimation over the sea in the conditions of multipath and thermal noise interferences

The work is devoted to improve the accuracy of radar measurements of elevation above sea level low-altitude targets when using the root-MUSIC method. Unlike previous studies, which take into account the multipath only, clutter are complicated by thermal noise of radar in this study. The study was carried out by computer simulation. The main focus was the study of effects on measurement errors of prior parameters of the method: the signal subspace dimension and the order of estimated correlation matrix of signals received by a multi-element antenna array. The recommendations of their choice, allowing to minimize the errors of elevation measurement in different conditions, have been developed.