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Strong maneuvering target tracking method based on multiple variable structure models

A mobile target tracking and multi-model technology, applied in the field of target tracking, can solve the problem of low target tracking accuracy

Active Publication Date: 2020-10-20
BEIJING INST OF ELECTRONICS SYST ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a tracking method for strong maneuvering targets based on variable structure multi-models for the problem of low target tracking accuracy when tracking high-speed and strong maneuvering targets in adjacent space

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  • Strong maneuvering target tracking method based on multiple variable structure models
  • Strong maneuvering target tracking method based on multiple variable structure models
  • Strong maneuvering target tracking method based on multiple variable structure models

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specific Embodiment approach 1

[0110] refer to figure 1 Specifically explaining this embodiment, the object of the present invention is to improve the tracking and positioning accuracy of a high-speed and strong maneuvering target in the adjacent space, and to predict the aerodynamic characteristic parameters of the target and detect the target's maneuvering in combination with the tracking principle. By establishing the dynamic model of the aircraft, the aerodynamic characteristic parameters of the target are expanded into the target tracking state quantity, and the filter tracking is carried out; at the same time, the tracking data of the target is obtained by combining the variable structure multi-model algorithm based on maneuver detection. Above-mentioned invention purpose is realized by following technical scheme:

[0111] In step 1 of the present invention, a dynamic tracking model set is constructed according to the dynamic characteristics of the target aircraft, and a state equation set of the mane...

Embodiment

[0239] The configuration of the computer used in the simulation of the embodiment of the present invention is: the CPU is i7-8550U, the main frequency is 1.80GHz, and the memory is 8GB.

[0240] Simulation scene: the target is maneuvering in the adjacent space, and the trajectory is as follows figure 2 As shown, the attack angle of the target changes slowly during this process, and the maneuvering of the target is mainly based on the change of the roll angle of the target's movement speed. The change of the roll angle is as follows: image 3 shown.

[0241] A variety of multi-model algorithms combined with the target tracking dynamics model realizes the tracking of strong maneuvering targets in the adjacent space, and performs multiple Monte Carlo simulations. The following mainly analyzes and compares the accuracy, convergence speed and stability of each algorithm.

[0242] The target tracking state quantity is X=[x y z v x v y v z alpha D alpha L ] T , the roll a...

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Abstract

A strong maneuvering target tracking method based on multiple variable structure models relates to the field of target tracking, and aims at solving the problem of low target tracking accuracy duringtracking of a near-space high-speed strong maneuvering target. The method comprises the steps of 1, constructing a dynamic tracking model set by utilizing dynamic characteristics of a target aircraft,and then obtaining a state equation set of a maneuvering target tracking system; 2, establishing a system measurement model, and obtaining a measurement equation and measurement noise of the system according to the established system measurement model; and 3, based on the state equation set of the system, the measurement equation of the system and the measurement noise, recursively estimating themotion state and the aerodynamic parameters of the target aircraft. According to the method, the dynamic tracking model set is constructed based on the dynamic characteristics of the target aircraft,the description precision of target motion is improved, and the target tracking precision is improved by adopting an improved variable structure multi-model tracking algorithm.

Description

technical field [0001] The invention relates to the field of target tracking, in particular to a method for tracking strong maneuvering targets based on variable structure multi-models. Background technique [0002] In the field of target tracking, the Kalman filter is usually used for tracking, and the target motion model and measurement data are combined to correct the measurement data. It mainly solves three problems: one is the measurement error of the observer, including constant value deviation and random deviation, and the instability and precision limit of the measurement data have been corrected in the target tracking algorithm; the other is the maneuvering of the target, Since the target and the tracking party belong to different organizations, it is impossible to accurately obtain the target's maneuvering mode, and its maneuvering has great randomness and uncertainty. During the tracking process, it can be used to identify whether the target has maneuvered or not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06T7/246G06T7/277G06F119/14
CPCG06F30/15G06T7/246G06T7/277G06F2119/14Y02T90/00
Inventor 李君龙曹颖高长生尹童张超陈晓波
Owner BEIJING INST OF ELECTRONICS SYST ENG
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