Synthesis and Research of Filter with a Variation of Coefficients for Tracking a Maneuvering Aerodynamic Target
Processing radar information about aerodynamic targets, coordinate information remains an urgent problem. It is assumed that the target moves in a straight line and evenly most of the time, and less of the time, it makes various maneuvers. Target tracking is carried out at a rate equal to the survey time, in the presence of coordinates measurements. Currently, there are number of filters for smoothing the target coordinate parameters. At the same time, the existing filters are characterized by a large error of smoothing in sections without a maneuver and small in sections with a maneuver, or vice versa – by a small error in sections without a maneuver and a large error in sections with a maneuver. Moreover, many filters work effectively only in some specified ranges of input parameters. The new filter should provide a minimum smoothing error in areas without maneuver. It should ensure the minimum possible errors and emissions of smoothing error during the maneuver and operate efficiently over the widest range of input parameters. To achieve this goal, a two-fold correction (variation) of the smoothing coefficients was used in accordance with the deviation of the coordinate of the newly measured position of the target (mark) from the extrapolated position. The variation is performed in accordance with the selected function, while the smoothing step acquires a certain conditional value.
