Approximate space target tracking method under influence of stealth and hypersonic velocity

Abstract

The present invention provides an approximate space target tracking method under the influence of stealth and hypersonic velocity. According to the method, a TBD (track before detect) algorithm is improved in point accumulation, recursive flight tracks are adopted to replace traditional point accumulation, the point accumulation is not composed of batch processing measurement at a plurality of time points any more, but composed of measurement at one time point and existing flight track points at m-1 time points, and therefore, the algorithm has real-time performance, and the problem of time delay difference caused by the hypersonic-velocity movement of a target can be effectively solved; the TBD (track before detect) algorithm is improved in energy accumulation, recursive energy is adopted to replace traditional energy accumulation, and therefore, the algorithm can effectively overcome a detection problem caused by the stealth of the target when tracking the target in real time; and the recursive flight tracks and the recursive energy are organically combined, and the effective tracking of the stealth high-speed target can be realized through the reasonable decision of a maximum recursive energy decision mechanism.

Description

technical field [0001] The invention relates to the field of hypersonic target tracking in near space, and is used to solve the problem of target tracking under the double influence of stealth and hypersonic speed. Background technique [0002] Different from traditional aircraft targets, near-space vehicles have the compound characteristics of stealth and hypersonic speed, which poses serious challenges to the existing radar early warning and defense systems. On the one hand, the speed of the approaching space vehicle is usually above Ma5, and the vehicle can pass through the radar early warning detection area in a very short time. At this time, even if the radar can find the target, there is not enough time to respond; on the other hand, in During the hypersonic flight of the target, a large number of plasma shock waves will be generated around the aircraft. These plasma shock waves absorb and scatter radar electromagnetic waves, so that the near-space aircraft also has ce...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to break through the limitations of the traditional TBD algorithm, solve the problem of target tracking under the dual influence of stealth + hypersonic speed, improve the ability of existing radars to track adjacent space targets, and propose an adjacent space target tracking based on maximum recursive energy tracking new method

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