Three-dimensional instantaneous imaging method for space high-speed maneuvering target

A technology of maneuvering targets and imaging methods, applied in the field of space target detection, can solve problems such as the inability to coherently accumulate signals, and achieve the effects of overcoming real-time performance, increasing the amount of information, and high reconstruction accuracy

Pending Publication Date: 2022-02-18
NO 63921 UNIT OF PLA +1
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Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a three-dimensional instantaneous imaging method for high-speed maneuvering targets in space, which can avoid the problem tha

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  • Three-dimensional instantaneous imaging method for space high-speed maneuvering target
  • Three-dimensional instantaneous imaging method for space high-speed maneuvering target
  • Three-dimensional instantaneous imaging method for space high-speed maneuvering target

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[0034] In order to better understand the present application scheme, the technical solutions in the present application embodiment will be described in connection with the drawings in the present application embodiments.

[0035] In the present invention, the distributed array radar uses a sparse distributed antenna array, combined with the MIMO technology to achieve a wide range of accurate calibration baseline planes, through multiple antenna phase-in-sectic processing instead of the introduction of the accumulated in the ISAR imaging, thereby obtaining real-time imaging capabilities No need to move compensation for the target. Therefore, sparse array instantaneous imaging radar systems can overcome a series of issues such as real-time, limited orientation resolution, and complex motion compensation, and complicated motion compensation. Specifically, such as figure 1 As shown, a spatial high-speed mobile target three-dimensional instantaneous imaging method provided by the prese...

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Abstract

The invention provides a three-dimensional instantaneous imaging method for a space high-speed maneuvering target, and the method achieves the imaging through a single pulse period signal, a problem that the signal cannot be subjected to phase-coherent accumulation caused by the maneuvering characteristic of the high-maneuvering target is solved, and the three-dimensional instantaneous imaging of the high-speed maneuvering target is realized. Therefore, the problem of poor imaging precision caused by mismatching of an existing sparse reconstruction algorithm in an actual scene can be solved, and the imaging algorithm has a real-time processing capability; meanwhile, compared with a traditional sparse reconstruction algorithm, the method based on the sparse Bayesian learning theory has the advantages that target statistical information is introduced, the information amount is increased, and the three-dimensional image reconstruction precision is high.

Description

technical field [0001] The invention belongs to the technical field of space target detection, and in particular relates to a three-dimensional instantaneous imaging method for a space high-speed maneuvering target. Background technique [0002] With the increasing level of modern space science and technology, new types of highly maneuverable space vehicles have become a new direction for the development of the space forces of major powers. This type of target has a complex motion pattern and strong high-speed maneuverability, which poses a huge challenge to the detection and measurement of space targets: on the one hand, it is difficult for the existing technical system to include the detection and stable tracking of high-speed maneuvering targets; on the other hand, the existing observation equipment Without fast imaging capability, dynamic measurement of target characteristics cannot be realized. Existing ground radar detection has relatively large limitations, which are...

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Application Information

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IPC IPC(8): G01S13/89G06F17/15G06F17/16
CPCG01S13/89G06F17/15G06F17/16
Inventor 齐巍张卓李玉良陈龙永姚惠生梁志勇
Owner NO 63921 UNIT OF PLA
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