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An mm‑ppdf maneuvering multi-target tracking method with improved search strategies

A multi-target tracking and search strategy technology, applied in the field of radar data processing, can solve problems such as target loss

Active Publication Date: 2017-08-25
NAVAL AVIATION UNIV
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Problems solved by technology

[0009] The purpose of the present invention is to propose a MM-PPHDF mobile multi-target tracking method with an improved search strategy to solve the problem that the general MM-PPHDF method is prone to target loss when the detection probability is low

Method used

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  • An mm‑ppdf maneuvering multi-target tracking method with improved search strategies
  • An mm‑ppdf maneuvering multi-target tracking method with improved search strategies
  • An mm‑ppdf maneuvering multi-target tracking method with improved search strategies

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Embodiment Construction

[0087] The MM-PPHDF method for improving the search strategy proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0088] Without loss of generality, a two-dimensional simulation scene is set, the monitoring area S=[-60km, 60km]×[-60km, 60km], and the total simulation time K=50s. It is assumed that the target obeys one of the following three motion models: uniform linear motion mode, clockwise coordinate rotation mode and counterclockwise coordinate rotation mode, and the probability of the initial motion mode of the target It can be freely converted between 3 motion modes, and the conversion between various motion models can be described as a 3-state first-order Markov chain, and the mode probability transition matrix

[0089]

[0090] maneuvering acceleration α m = 1.08. The target can appear and disappear randomly in the monitoring area, and the average target appearance probability γ k = 0.2, the initi...

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Abstract

The invention discloses an MM-PPHDF maneuvering multi-target tracking method through an improved search strategy, and belongs to the field of radar data processing. The maneuvering multi-target tracking method based on MM-PPHDF has an obvious defect of rapid degeneration of particle diversity caused by resampling when leak detection of targets occurs and then the phenomenon of target loss occurs, and thus the algorithm is difficult to meet maneuvering multi-target tracking of low target detection probability. The MM-PPHDF maneuvering multi-target tracking method through the improved search strategy aims at solving the problem. The MM-PPHDF maneuvering multi-target tracking method has advantages of being simple in structure, rapid in computation and great in adaptability to a strongly nonlinear and non-Gaussian system. The experimental simulation result of the embodiment also indicates that the limitation of application of the method based on MM-PPHDF can be effectively overcome so that the MM-PPHDF maneuvering multi-target tracking method through the improved search strategy has relatively high engineering application value and popularization prospect.

Description

technical field [0001] The invention relates to a radar data processing method, in particular to a radar tracking method for maneuvering multiple targets under the condition of low detection probability. Background technique [0002] The increasingly complex electromagnetic environment and the emergence of a large number of various aircraft have brought severe challenges to the detection and tracking performance of radar. At the same time, in order to improve the ability of survival and defense penetration, the target usually performs certain maneuvers at any time, and its motion state will also change due to different combat tasks, which further increases the difficulty of radar tracking it. Therefore, it is of great significance to improve the combat effectiveness and survivability of radar to realize the effective tracking of radar to maneuvering multiple targets in complex electromagnetic environment. The current multi-target tracking method based on Particle Probabilis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/02G01S13/56G01S13/66
CPCG01S7/02G01S13/56G01S13/66
Inventor 谭顺成王国宏吴巍于洪波
Owner NAVAL AVIATION UNIV
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