UDC 621.391:621.396.96
OPTIMIZATION OF MULTIFREQUENCY RADAR SIGNAL PROCESSING SYSTEMS
D.I. Popov, Dr. Sc. (Tech.), Professor, RSREU, Ryazan, Russia; This email address is being protected from spambots. You need JavaScript enabled to view it.
Processing systems for multifrequency radar signals based on auto-compensator of the Doppler phase of the components of multifrequency passive interference and non-adaptive rejection filters are discussed, followed by incoherent integration and accumulation of remnant residuals in frequency channels. The aim of the work is parametric optimization of multifrequency radar signal processing systems based on minimax probability criterion that allows solving the problem of rejection filter weight coefficient vector optimization in a priori range of spectral parameters of passive interference. The developed method of processing system parametric optimization made it possible to minimize losses in threshold signal / noise ratio and achieve high detection efficiency of multifrequency radar signals over the entire range of passive interference spectrum width variation, avoiding the construction of complex adaptive rejection filters in frequency channels. As a result of the analysis for efficient detection of multifrequency signal against the background of passive interference, it is established that with inter-channel averaging of the Doppler phase estimates of passive interference, the losses due to errors in auto-compensation of threshold signal / noise ratio with a relatively small training sample size are less than one decibel.
Key words: detection algorithm, probabilistic characteristics, minimax criterion, multifrequency signal, multifrequency passive interference, rejection filter.