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

A target tracking and hypersonic technology, which is applied in the direction of radio wave reflection/re-radiation, using re-radiation, measuring devices, etc., to achieve fast computing speed, strong real-time performance, and eliminate delay deviation

Active Publication Date: 2017-09-08
NAVAL AVIATION UNIV
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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...

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

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Embodiment Construction

[0023] Aiming at the problem of tracking objects in near space under the double influence of stealth and hypersonic speed, the present invention designs a new method for tracking objects in near space based on maximum recursive energy tracking. First of all, the TBD algorithm is improved on the point accumulation, and the traditional point accumulation is replaced by the recursive track. At this time, the point accumulation will no longer be composed of batch measurements at multiple times, but the quantity at one time In this way, the algorithm not only has real-time performance, but also can effectively solve the problem of delay deviation caused by target hypersonic movement; then, the TBD algorithm is improved in terms of energy accumulation Further improvement, using the recursive energy to replace the traditional energy accumulation, so that the algorithm can effectively overcome the detection problems caused by the stealth of the target while tracking the target in real ...

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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...

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Application Information

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IPC IPC(8): G01S13/72
CPCG01S13/723
Inventor 张翔宇王国宏黄婧丽白杰
Owner NAVAL AVIATION UNIV
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