METHOD OF TRACKING AERIAL TARGET FROM “TURBOJET AIRCRAFT” CLASS UNDER EFFECT OF RANGE AND VELOCITY DEFLECTING NOISE Russian patent published in 2018 - IPC G01S13/66 

FIELD: radar ranging and radio navigation.

SUBSTANCE: invention relates to the field of secondary digital processing of radar signals and can be used in a radar to form, with the accompaniment of an air target (AT) from the "turbojet aircraft" class, a reliable estimate of the radial functionally related coordinates of the mutual displacement of the AT and the carrier of the radar under effect of range and velocity deflecting noise. Method consists in identifying a separate or combined effect of range and velocity deflecting noise on the basis of a joint analysis of the derivative of the difference estimate between the estimated Doppler frequencies due to reflections of the signal from the glider and blades of the impeller of the first stage of the low-pressure compressor of the power plant of the AT, module of the difference between the estimate of the range derivative and the velocity estimate, the modulus of the difference between the range estimate and the calculated range on the basis of the dynamic model of radial functionally coupled coordinates, forming resulted joint analysis based on multidimensional linear discrete Kalman filtering range estimates and speed taking into account the dynamic model of the radial functionally related coordinates of the mutual movement of the AT and the carrier of the radar and the range and velocity measurements, when the absence of the effect of interference in range and velocity is identified, or only the range is measured, when only effect of velocity deflecting noise is identified, or only velocity measurement, when the effect of only range deflecting noise is identified, as well as calculation of range and velocity estimates only on the basis of a dynamic model of functionally related coordinates without range and velocity measurements, when a simultaneous effect of range and velocity deflecting noise is identified.

EFFECT: increased reliability of estimates of the radial functionally related range to the AT and the velocity of approach of the radar carrier with it under the influence of jamming together or separately in terms of velocity and range.

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