Space maneuvering target ISAR imaging method, device and equipment and storage medium

A technology of maneuvering targets and imaging methods, applied in the field of ISAR imaging, can solve problems such as unsuitable for real-time processing and high computational complexity, and achieve the effects of reducing computational complexity, high computational efficiency, and reducing the threshold of signal-to-noise ratio

Pending Publication Date: 2022-03-01
北京理工大学重庆创新中心 +1
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Problems solved by technology

Although this type of method can obtain better ISAR imaging results, it has a high computational complexity and is hardly suitable for real-time processing because it needs to traverse all the range cells of the target and estimate the relevant parameters of all the scattering points of the target.

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  • Space maneuvering target ISAR imaging method, device and equipment and storage medium
  • Space maneuvering target ISAR imaging method, device and equipment and storage medium
  • Space maneuvering target ISAR imaging method, device and equipment and storage medium

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific implementation methods in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] In one embodiment, such as figure 1 As shown, a space maneuvering target ISAR imaging method is provided, including the following steps:

[0025] S1 performs range pulse compression and motion compensation on the echo signal, corrects all scattering points to the corresponding distance units, and obtains the original signal of K distance units.

[0026] In one embodiment, before step S1, further includes: acquiring echo signal data.

[0027] In one embodiment, the original signal in step S1 is a multi-component cubic phase signal, and the parameters of the original...

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Abstract

The invention provides a space maneuvering target ISAR imaging method, device and equipment and a storage medium, and the method comprises the steps: carrying out the pulse compression and motion compensation of an echo signal, obtaining an original signal, carrying out the order reduction of the original signal through a high-order fuzzy function, achieving the parameter estimation through a coherent accumulation cubic phase function, and reconstructing the original signal, thereby achieving the ISAR imaging. According to the scheme, the second-order parameter and the third-order parameter of the original signal can be estimated at the same time, the calculation efficiency is high, and the calculation complexity is reduced; and meanwhile, by increasing self-term energy, the signal-to-noise ratio threshold is reduced, and the robustness of parameter estimation under the low signal-to-noise ratio is improved.

Description

technical field [0001] The present invention relates to the technical field of ISAR imaging, in particular to a space maneuvering target ISAR imaging method, device, equipment and storage medium. Background technique [0002] Inverse Synthetic Aperture Radar (Inverse Synthetic Aperture Radar, ISAR) mainly realizes all-weather and all-weather detection and imaging of mobile targets such as space / sea surface through fixed / relatively fixed antennas. It is of great significance and has attracted widespread attention from all over the world. At present, the space environment is becoming more and more complex, and the number of large / complex maneuvering targets is increasing, which poses severe challenges to accurately obtain high-resolution images of maneuvering targets. For uniformly rotating targets with poor maneuverability, the traditional Range-Doppler (RD) imaging method can obtain a relatively ideal target image, but for highly maneuverable targets, due to the non-uniform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90
CPCG01S13/9064
Inventor 张成祥向寅丁泽刚王岩董锡超
Owner 北京理工大学重庆创新中心
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