TELECOMMUNICATIONS AND RADIO ENGINEERING - 2011 Vol. 70,
No 12 		 

 

 

 

USING OF THE MUSIC ALGORITHM TO ELEVATION ANGLE MEASUREMENT OF LOW-ALTITUDE TARGETS OVER ROUGH SEA SURFACE



Yu.A. Pedenko
A. Usikov Institute of Radio Physics and Electronics,
National Academy of Sciences of Ukraine
12, Academician Proskura St., Kharkiv 61085, Ukraine

Address all correspondence to Yu.A. Pedenko E-mail: pedenko@ire.kharkov.ua

Abstract
Computer simulation of a low-altitude target elevation angle measurement over a rough sea surface under conditions of a strong diffuse reflection is performed using MUSIC method. It is found that a part of diffuse reflection arriving from the “glittering” surface, the zone nearest to the radar, exerts the greatest action on the errors. The axes, being a part of the receiving antenna array, are offered to align at the positive angle to the interface with the aim to reduce the errors value. In this case the antenna radiation patterns should suppress as much as possible the diffuse reflection signals arriving from the near zone ensuring a sufficient level for reception of the signal arriving from the target. Characteristics of elevation angle measurement errors in various phases of interference of primary and mirror signals in the receiving antenna array center and at different angles of elevation of receiving antennas axes are analyzed.
KEY WORDS:MUSIC algorithm, low-altitude target, elevation angle measurement, multibeam propagation, simulation

References

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  4. Becêman, P. and Spizzichino, A., (1963), The scattering of electromagnetic wave from rough surface, London: Pergamon press, – 303 p.
  5. Razskazovsky, V.B. and Pedenko, Yu.A., (2003), Modeling Millimeter and Centimeter Wavelength Fields over the Sea in the Analysis of Elevation Angle Estimation Methods for Low-Flying Aerial Targets, Telecommunications and Radio Engineering. 59(3-4):82-100.


pages 1027-1036

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