THREE-DIMENSIONAL ADAPTIVE ALPHA-BETA FILTER Russian patent published in 2017 - IPC G06F17/00 

FIELD: radio engineering, communication.

SUBSTANCE: device uses a compensator for dynamic lag of coordinates, speed and extrapolated position. The three-dimensional adaptive α-β filter estimates the probability and intensity of the maneuver according to the position of the smoothed renewal sequence vector with respect to the threshold ellipsoid in a rectangular coordinate system, in which the center is associated with a mark from the target, and the direction of the rectangular axes is related to the measurement direction. The filter includes a calculator of smoothing coefficients, which determines the coefficients α-β taking into account the probability estimation, and for large accelerations and the intensity of the maneuver; an additional maneuver detector in the presence of radial velocity as part of the characteristics of the marks from the targets. Smoothing the update sequence vector in the associated coordinate system allows to reduce the number of false alarms, to increase the sensitivity to the maneuver definition and contributes to the allocation of the dynamic component necessary for compensation, and compensation provides a reduction in tracking errors in coordinates and target speed and creates the conditions for increasing the sustainability of tracking the target during maneuvers due to the reduction of extrapolation errors.

EFFECT: reducing tracking errors with the tracking α-βfilter, when accompanying the maneuvering targets.

2 cl, 29 dwg