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UDC 621.396

ESTIMATION OF SURFACE REFLECTING ELEMENT COORDINATES IN A BOARDDOPPLER RADAR STATION

V. K. Klochko, PhD., head of EMM department, RSREU; This email address is being protected from spambots. You need JavaScript enabled to view it.
Yu. R. Polikanov, master studentof RTS department, RSREU; This email address is being protected from spambots. You need JavaScript enabled to view it.

The description ofboard multi-channel Doppler system to estimate spatial coordinates of separate reflecting surface elements is given. Estimation of each element coordinates is carried out on the basis of several spectral countings having passed the path of preprocessing in several receiving channels and corresponding to one Doppler frequency. Oscillations of Doppler frequency due to the signals received by several aerials lead to the appearance of false spectral countingsand change of their amplitude. There is a problem of exact separation of spectral counting in several receiving channels corresponding to the same reflecting surface element. The aim of the work – to improve an algorithm of spectral counting separation taking into account possible oscillations of frequency and to research the operation of spatial coordinates estimation algorithms. The algorithm of spectral counting separation based on the method of optimum classification is offered. On the basis of mathematical model of spectral countings thedescription of estimation algorithms based on monopulse and phase methods is given. The results of computer modeling of algorithms operation are provided. The influence of spectral counting separation errors on thecoordinates
estimation accuracy is studied.

Key words: coordinates estimation, board radar station, multi-channel Doppler radar station, separation
of spectral countings, monopulse method, phase method.

DOI: 10.21667/1995-4565-2017-59-1-15-23