A Maneuvering Target Tracking Method Under Constrained Conditions

A technology for maneuvering target tracking and constraint conditions, applied in the directions of radio wave reflection/re-radiation, using re-radiation, measurement devices, etc., can solve the problems of complex shape of constraint trajectory, model mismatch and performance loss without systematic solution

Active Publication Date: 2017-07-25
HARBIN INST OF TECH
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Problems solved by technology

[0003] However, when dealing with the problem of constrained target tracking, conventional target tracking methods have obvious defects: 1. The shape of the constrained trajectory is complex, and the mismatch of the traditional motion model is serious; 2. The conventional method does not consider the prior information of the constraint conditions, resulting in information waste; 3. The tracking results are difficult to meet the constraints, and there is a performance loss
Such methods still fail to resolve the mismatch between conventional models and complex constraints
[0009] The above-mentioned methods are all based on the conventional unconstrained model to study the constraint tracking problem, and do not systematically solve the problem of model mismatch, and most of them are based on the assumption that the target has no maneuvering.

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  • A Maneuvering Target Tracking Method Under Constrained Conditions
  • A Maneuvering Target Tracking Method Under Constrained Conditions
  • A Maneuvering Target Tracking Method Under Constrained Conditions

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Embodiment Construction

[0066] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples. The drawings and the descriptions in the embodiments are only exemplary, and do not limit the protection scope of the present invention.

[0067] figure 1 A flowchart according to one embodiment of the invention is shown. like figure 1 as shown,

[0068] First in step S210, radar position measurement information is obtained from the observation radar. In one embodiment, the radar position measurement information is the distance and azimuth of the maneuvering target (this embodiment takes a vehicle driving on the road as an example) relative to the origin of the observation radar coordinate system. As for how the radar obtains the information and how the method of the embodiment of the present invention obtains the information from the radar, those skilled in the art can implement various methods, and no matter which method is adopted, it is wi...

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Abstract

The invention discloses a maneuvering target tracking method under constraint conditions, comprising the steps of: A, obtaining the position measurement information of a maneuvering target; B, converting the position measurement information into Cartesian coordinate measurement; C, establishing a constrained coordinate static model in a one-dimensional space, i.e., building the mileage S expression of the position of the maneuvering target in road x, y directions; D, setting motion models according to motion characteristics of the maneuvering target, and establishing a state equation and a measurement equation according to the established expression; and E, for each motion model, filtering converted Cartesian coordinate measurement to obtain a one-dimensional variable mileage S and speed filtering result. According to the embodiment, the tracking performance of a maneuvering target can be improved.

Description

technical field [0001] The invention relates to maneuvering target tracking under constraint conditions, in particular to a maneuvering target tracking method for transferring two-dimensional constraints to one-dimensional space for processing. Background technique [0002] In the field of radar target tracking, there are some scenarios where the development of the target's trajectory is not determined by its own movement speed, but is seriously affected or even strictly restricted by the external environment. For example, a vehicle driving on a road is constrained by terrain and road shape, and the possibility of leaving the road is extremely small, which is a typical constrained target tracking problem. [0003] However, when dealing with the problem of constrained target tracking, conventional target tracking methods have obvious defects: first, the shape of the constraint trajectory is complex, and the traditional motion model mismatch is serious; second, the conventiona...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/72
CPCG01S13/723
Inventor 周共健李可毅陈曦
Owner HARBIN INST OF TECH
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