%0 Journal Article
%A Pedenko, Yu. A.
%D 2015
%I Begell House
%K root-MUSIC, low-altitude target, measurement of elevation angle,
computer simulation
%N 12
%P 1071-1084
%R 10.1615/TelecomRadEng.v74.i12.30
%T ELEVATION ANGLE MEASUREMENT ABOVE THE SEA SURFACE USING THE *ROOT-MUSIC* METHOD. SELECTION OF SOLUTIONS
%U http://dl.begellhouse.com/journals/0632a9d54950b268,569e181f6e6b3b5d,00a25fa35decf80a.html
%V 74
%X In this paper special emphasis is given to improving the accuracy of elevation angle
measurement of law-altitude targets above the sea through the use of the root-Music method.
To this end, this special-purpose technique (or a sort of algorithm) is used, which is treated by
some experts as the one helping solve this particular problem. The method in hand cannot be
effectively implemented unless one of the issues pertinent to selecting a target-related solution
is adequately explored. The appropriate solutions are chosen from the collection of several
solutions already found. Their number is determined by the subspace dimension of signals. It is
through computer simulation process that the collection of measured elevation angle
distributions were obtained and analyzed for sea states. This procedure was accomplished at a
varying number of spatial signal samples on a given antenna array aperture and with different
subspace dimensions of signals. Elevation angle dependences of r.m.s. elevation-angle
measurement errors are calculated using several proposed rules of solution choice. Special
requirements are set for antenna arrays used in elevation angle measuring devices. The
requirements, if properly used, will lead to a decrease in solution error. We have come up with
the rules that find effective solution to an adequate choice of a definite problem. The findings of
the studies five a good indication of how to refine the techniques for and devices of measuring
the elevation angles of low-altitude targets above the sea.
%8 2015-12-11