A Method of Saving Radar Node Resources in Passive Multi-Radar Cognitive Tracking

A multi-radar and passive technology, applied in the radar field, can solve the problems of waste of radar node resources, weak radar system concealment, and limited use of radar nodes

Active Publication Date: 2020-05-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned problems, provide a method for saving radar node resources in passive multi-radar cognitive tracking, and at the same time solve the problem of weak concealment of the radar system itself, limited use of radar nodes and waste of unnecessary radar nodes resource technical issues

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  • A Method of Saving Radar Node Resources in Passive Multi-Radar Cognitive Tracking
  • A Method of Saving Radar Node Resources in Passive Multi-Radar Cognitive Tracking
  • A Method of Saving Radar Node Resources in Passive Multi-Radar Cognitive Tracking

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Embodiment

[0097] See figure 2 , This embodiment includes 5 radars, two scenarios, scenario one is the target approaching radar system such as image 3 Shows that the second scenario is that the target moves in the radar system like Figure 4 Show. The specific position coordinates of the radar in the two scenarios are image 3 with Figure 4 Presented. The coordinates of the initial position of the target are (50,150)km, the coordinates of the velocity component are (250,0)m / s, and the time interval between two frames is T 0 =10s, total tracking frame number K = 30, target tracking accuracy T preset max = 250m. In the simulation, when the radar cost is considered, the node cost value of the five radars is 1, 1, 6, 1, 5 in order.

[0098] The cost of using different radar nodes c i In the same situation, the simulation results of radar node selection for scenario 1 are as follows: Figure 5 As shown, the result of radar node selection in scenario 2 is as follows Image 6 Shown. Combine ...

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Abstract

The invention discloses a method for saving radar node resources in passive multi-radar cognitive tracking. The present invention first averages the random signals in the passive multi-radar system, obtains a new Bayesian Cramerot boundary as the evaluation standard of tracking performance, and then uses the tracking accuracy preset by the system as the constraint condition to minimize the The total number of radar nodes is the objective function, and a knapsack problem based on node selection is established, and then an effective heuristic algorithm is proposed to solve the knapsack problem, which effectively solves the high complexity of solving by exhaustive search algorithm in practical applications. Or problems that are difficult to solve, and finally according to the optimal node selection results, the target tracking is completed through particle filtering, so as to achieve the tracking accuracy required by the system while saving radar node resources, and then to complete more other tasks.

Description

Technical field [0001] The invention belongs to the field of radar technology, and particularly relates to resource management and control technology in multi-radar cognitive tracking. Background technique [0002] Recently, multi-radar systems use multiple nodes to achieve special tasks. Compared with the traditional single radar, the multi-radar system shows many advantages, such as speed diversity, space diversity, multiplexing gain, etc. There are more and more typical practical applications for target tracking using radar, sonar and video sensors. In order to achieve high tracking accuracy, system resources must be maximized. However, the system resources are always limited in practice. Therefore, resource awareness design is to use limited resources to maximize the potential of the radar, which is very important and has attracted a lot of attention. [0003] Node selection is one of the most important resource awareness issues. Due to the limitations of bandwidth, transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/66
Inventor 易伟孙伟王祥丽徐璐宵孔令讲谢明池袁野
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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