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Self-adaptive adjusting method of networking radar signal bandwidth

A technology for self-adaptive adjustment and networking of radars. It is used in the reflection/re-radiation of radio waves, the use of re-radiation, and measurement devices.

Active Publication Date: 2019-04-16
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
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Problems solved by technology

However, for 3D imaging of networked radars, at least three radars are required to image simultaneously, and the three unconstrained variables cannot guarantee the optimal solution of the model for the cognitive radar system of multi-target imaging tasks.
Moreover, most of the existing technologies are researched on a single radar, and do not consider the task requirements of joint imaging of three or more radars

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  • Self-adaptive adjusting method of networking radar signal bandwidth
  • Self-adaptive adjusting method of networking radar signal bandwidth
  • Self-adaptive adjusting method of networking radar signal bandwidth

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Embodiment Construction

[0058] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited.

[0059] figure 1 It shows an adaptive adjustment method of networked radar signal bandwidth. On the basis of each radar's characteristic cognition of the target, the three-dimensional information fusion of the target is carried out. According to the size of the target in the fusion distance direction of each radar, Initialize the radar transmission signal bandwidth, image the radar target, and then adaptively adjust the bandwidth of each radar transmission signal according to the network joint imaging quality evaluation index, including the following steps:

[0060] (1) Initialize system parameters, including the following specific content: figure 2 The total number of radars for imaging the target is 3, denoted as R ai (i=1,2,3), the signal bandwidth B used by the i-th radar to image the target 1 ...

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Abstract

The invention discloses a self-adaptive adjusting method of networking radar signal bandwidth. The method comprises the following steps: (1) initializing a system parameter; (2) emitting a small amount of pulse by each radar, and performing target parameter estimation; (3) estimating a target size according to the echo information; (4) performing range information fusion; (5) performing radar signal initial bandwidth distribution; (6) enabling the emitting bandwidth of the i-th radar in the networking radar to be a radar signal of B'i,j, and receiving an echo signal of the target j; (7) performing two-dimensional ISAR imaging, and imaging echo data of each radar by adopting the sparse aperture ISAR imaging algorithm based on CS, wherein the i-th radar records the imaging of the target j asPi, j; (8) computing comprehensive evaluation indexes of M radars; (9) judging a networking joint imaging quality evaluation index; and (10) adding bandwidth for each radar, and performing joint imaging again. Through the method disclosed by the invention, the used radar spectrum resource is less under the condition that the networking radar achieves an optimal imaging effect.

Description

technical field [0001] The invention relates to the technical field of bandwidth optimization of networked radar collaborative imaging, in particular to an adaptive adjustment method for networked radar signal bandwidth. Background technique [0002] Radar networking utilizes the advantages of space diversity in the airspace, frequency diversity in the frequency domain, polarization diversity in the polarization domain, information complementarity in the time domain, and information fusion in the information domain to break through the detection and identification of non-cooperative targets by a single radar. Limitations in tracking and imaging. With the development and wide application of networking technology, how to effectively use limited radar resources has become one of the important challenges facing the radar networking system. [0003] The combination of cognitive control technology and radar networking can endow the radar networking system with the ability to inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S7/28G01S13/90
CPCG01S7/28G01S7/41G01S13/9029G01S13/9064
Inventor 廖可非牛耀欧阳缮黎爱琼冯伟业
Owner GUILIN UNIV OF ELECTRONIC TECH
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