METHOD FOR INCOHERENT EXTREME ACCUMULATION-DETECTION OF A SIGNAL IN PULSE-DOPPLER RADAR

摘要

FIELD: radar ranging and radio navigation.;SUBSTANCE: invention relates to radar ranging, in particular, to detection of moving targets by means of incoherent extreme accumulation-detection of signal in pulse-Doppler radar station. For this purpose, in pulse-Doppler radar station, providing for coherent-Doppler filtration of signals in each element of resolution on range and radial velocity, form a matrix of range-radial velocity, containing amplitudes of signals. At that, hypothesis on presence of target in current view for each channel of radial speed is accepted in case of acceptance of at least one of particular hypotheses, each of which is accepted, if sufficient statistics exceed threshold value, sufficient statistics are formed by summation of modules of maximum values of signal amplitudes from samples of radial velocity channel obtained in adjacent surveys of one angular direction, volume of samples is limited by distance strokes, which are generated by backward extrapolation of the range relative to the range resolution element with the maximum signal amplitude in the current view based on estimates of its range, radial velocity and measurement error, survey period and accepted target motion hypothesis, wherein private hypotheses are hypotheses on presence of signal: only in current overview, current and previous review, current and two previous surveys, etc., number of tested partial hypotheses is assumed to be equal to that of detector.;EFFECT: implementation of incoherent inter-survey signal accumulation in pulse-Doppler radar station with ambiguous measurement of range of targets and "hard" space review program.;1 cl, 4 dwg