|

Analysis and modeling of a signal coming from a location object, determination of his true angle of an approach

Authors: Burdyga A.V., Logvinenko A.S.
Published in issue: #1(30)/2019
DOI: 10.18698/2541-8009-2019-1-430


Category: Instrument Engineering, Metrology, Information-Measuring Instruments and Systems | Chapter: Instruments and Measuring Methods

Keywords: bearing, antenna array, elevation angle, azimuth, algorithm for finding the nearest, underlying surface, directivity pattern, angle estimation, reference hypotheses
Published: 30.01.2019

The paper deals with the essence of the received signal by receivers from the object location that may interfere with its correct decoding and recognition of the true direction of approach. The purpose of the simulation is to identify the correct angle of object’s approach. For this, the authors consider the influence of the reflected signal from the underlying surface on the accuracy of recognizing the direction of the location object. In this paper, the authors designed a model of the antenna array, and the directivity pattern of each antenna was taken into account, signals were generated at the antenna receivers, the problem of distorting the signal due to reflection from the ground was solved using the nearest search algorithm.


References

[1] Bakulev P.A. Radiolokatsionnye sistemy [Radiolocation systems]. Мoscow, Radiotekhnika Publ., 2004. (in Russ.)

[2] Beckmann P., Spizzichino A. The scattering of electromagnetic waves from rough surfaces. Pergamon Press, 1963.

[3] Loginov A.A., Morozov O.A., Semenova M.Yu. Algorithm of angle estimation precision increase for amplitude monopulse passive direction-finding. Vestnik Nizhegorodskogo universiteta im. Lobachevskogo [Vestnik of Lobachevsky University of Nizhni Novgorod], 2010, no. 5(2), pp. 358–362. (in Russ.)

[4] Shipit’ko O.S. Simulation and realization of Capon method. Molodezhnyy nauchno-tekhnicheskiy vestnik, 2014, no. 11. URL: http://ainsnt.ru/doc/744881.html (in Russ.)

[5] Pokrovskaya E.A. Operation of instrument to measure altitude of low flying target with allowance for influence of reflections from uneven sea surface. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Mashinostr. [Herald of the Bauman Moscow State Tech. Univ., Mechan. Eng.], 2008, no. 2, pp. 29–38. URL: http://vestnikmach.ru/catalog/simul/hidden/194.html (in Russ.)

[6] Matyunin D.V., Silin S.I., Zhurakovskiy V.N. Estimating the bearings of reflectors using the maximum likelihood method with a limited number of rays generated by the antenna array. Antenny [Antennas], no. 7, 2016, pp. 35–39. (in Russ.)

[7] Kazarinov Yu.M., ed. Radiotekhnicheskie sistemy [Radio-technical systems]. Мoscow, Vysshaya shkola Publ., 1990. (in Russ.)

[8] Ermolaev V.T., Flaksman A.G. Metody otsenivaniya parametrov istochnikov signalov i pomekh, prinimaemykh antennoy reshetkoy [Methods for parameters assessment of sources of signals and clutters received by array]. Nizhniy Novgorod, NNGU Publ., 2007. (in Russ.)

[9] Kubanov V.P. Napravlennye svoystva antennykh reshetok [Directional response of antenna arrays]. Samara, PGUTI Publ., 2011. (in Russ.)

[10] Pirogov A.A., Zhurakovskiy V.N. Simulation of signals, reflected from wavy sea surface. Inzhenernyy vestnik [Engineering bulletin], no. 5, 2017. URL: http://ainjournal.ru/doc/858827.html (in Russ.)