Restricted group target associated door formation method

Abstract

The invention provides a restricted group target associated door formation method comprising the following steps that S1. a geometric area of the group target scale is acquired; S2. the geometric center of the group target is solved; and S3. a restricted group target associated door threshold value is determined. The restricted group target associated door threshold value is the same with a group target associated door threshold value so that group target member determination can be guaranteed; and the restricted group target associated door threshold value is far greater than a group target tracking door so that correct receiving of equivalent measurement can be guaranteed. According to the restricted group target associated door method, double thresholds of the conventional associated door and the tracking door are changed into the single threshold so that the efficiency can be enhanced, the computational burden can be reduced and realization of the project is facilitated. The restricted tracking door is suitable for target tracking of narrowband radar and broadband radar and also applied to target tracking of visible light, infrared and multispectral sensors; single targets, multiple targets, dense multiple targets and sparse multiple targets can be tracked; and the method is suitable for group target tracking of the physical domain and also suitable for generalized group target tracking.

Description

technical field [0001] The invention belongs to the field of information processing, in particular to the field of radar, optical and infrared system target tracking. Background technique [0002] The problem of dense multi-target tracking under the complex background of modern radar, optical and infrared detection systems is not only a key problem, but also a difficult problem. Therefore, a method and technology for group target tracking are produced. A group target is also called a group target or a target group, which refers to a collection of multiple targets that satisfy a given target distance criterion and maintain a relatively stable spatial position for a long enough time, and update the filter with the equivalent measurement of the group target members device status. This kind of group target formed by only using the target position information is also called narrow group target. [0003] The information flow of group target tracking is as follows: figure 1 As ...

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Problems solved by technology

Since the essence of the tracking gate is to ensure that the measurement falls into the tracking gate, and the correlation gate and the tracking gate are concentric, and the correlation gate is larger than the tracking gate, therefore, the measurement falling into the tracking gate must fall into the correlation gate. Therefore, this double-threshold method is not only a waste of time resources, but also inefficient

[0007] Third, in most multi-target tracking literatures, "association gate" and "tracking gate" are commonly used, but generally only one reference is used in the same literature, and these two idiomatic terms are used together in group target tracking, which is easy to cause confusion

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