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Node scheduling and transmitting resource allocation method of centralized MIMO radar network

A resource allocation and centralized technology, applied in the direction of radio wave reflection/re-radiation, utilization of re-radiation, special data processing applications, etc., can solve the limited research on resource allocation, optimal allocation of three types of resources, and less research on bandwidth allocation and other problems to achieve the effect of reducing computational complexity

Pending Publication Date: 2021-08-13
AIR FORCE UNIV PLA
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Problems solved by technology

However, most of the existing research focuses on the optimal allocation of one or two of the above-mentioned system resources, and does not optimize the allocation of the three resources at the same time.
In addition, compared with single-station radar, the networked radar has a great space gain advantage, but the current research on the resource allocation of the centralized MIMO radar network system to perform MTT tasks is very limited
In general, the existing centralized MIMO radar network system research on resource allocation for MTT mainly focuses on transmitting beam and power resources in order to improve the accuracy of target position estimation, but less research on bandwidth allocation

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  • Node scheduling and transmitting resource allocation method of centralized MIMO radar network
  • Node scheduling and transmitting resource allocation method of centralized MIMO radar network
  • Node scheduling and transmitting resource allocation method of centralized MIMO radar network

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[0097] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0098] The present invention provides a method for node scheduling and transmission resource allocation of a centralized MIMO radar network, comprising the following steps:

[0099] S1 build system model

[0100] S11 establishes a node scheduling model

[0101] Assume that in the x-y plane, a networked centralized MIMO radar system consists of N≥3 sub-radars, and the working center of each node is located at the point (x n ,y n ), where n=1,2,...,N, the system performs tracking tasks on Q≥3 moving targets in the target airspace, assuming that each target is independent of each other and can be approximated as a point target, in order to simplify the model, let the target The number of targets to be tracked in the airspace is constant as Q, an...

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Abstract

The invention provides a node scheduling and transmitting resource allocation method of a centralized MIMO radar network, and the method comprises the steps: a target optimization function is constructed through calculating the PCRLB of a distance estimation error of each target, thereby converting a complex multi-resource joint allocation problem into a non-convex optimization problem; a non-convex optimization problem is converted into a series of SDP problems by introducing a convex relaxation technology and an SDP algorithm, and a suboptimal solution is solved; and the solving precision of the suboptimal solution is controlled by using a cyclic minimization algorithm, so that effective solving of radar node scheduling and power and bandwidth allocation problems is finally realized, and the calculation complexity is reduced.

Description

【Technical field】 [0001] The invention relates to a node scheduling and transmission resource allocation method, in particular to a node scheduling and transmission resource allocation method of a centralized MIMO radar network. 【Background technique】 [0002] As a new radar system, networked radar has better spatial gain and anti-jamming performance than single-static radar, and has attracted extensive attention of researchers in recent years. In a network system composed of multiple centralized multi-input multi-output (MIMO) radars, each radar node can independently perform multiple tasks by adopting a simultaneous multi-beam (Simultaneous Multibeam, SM) working mechanism. Due to the high degree of freedom in waveform design, centralized MIMO radar combined with cognitive tracking technology can excellently complete the task of multiple target tracking (Multiple Target Tracking, MTT). [0003] In practical applications, when single-station centralized MIMO radars perform...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/42G01S13/88G06F30/20
CPCG01S7/42G01S13/88G06F30/20
Inventor 李正杰谢军伟邵雷张浩为李媛刘宇璇李广剑
Owner AIR FORCE UNIV PLA
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