Multi-band multi-view ISAR fusion imaging method

An imaging method and multi-view technology, which can be applied to instruments, measurement devices, and re-radiation, etc., can solve the problems of limited reconstruction accuracy, difficulty in accurate estimation, and unfavorable real-time processing, so as to improve imaging efficiency and accelerate iterative convergence speed. Effect

Active Publication Date: 2021-05-28
ARMY ENG UNIV OF PLA
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Problems solved by technology

At this time, if a greedy algorithm is used to solve the problem, such as the OMP algorithm, the reconstruction accuracy is limited, and the sparsity of the signal needs to be predicted, which is difficult to estimate accurately in the actual process, which restricts the a

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Embodiment Construction

[0040] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041]In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0042] In general, the e...

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Abstract

The invention discloses a multi-band multi-view ISAR fusion imaging method, and relates to the technical field of image processing methods. According to the method, firstly, a vectorization sparse representation model of multi-band multi-view ISAR fusion imaging is established, and in order to reduce the calculation complexity during solving and improve the imaging efficiency, on the basis of a Bregman iteration algorithm, the iteration convergence speed of the algorithm is further improved in combination with weighted residual error back substitution and basis matrix condition number optimization; a simulation experiment verifies the effectiveness and superiority of the algorithm in realizing one-dimensional sparse signal reconstruction and multi-band multi-view ISAR fusion imaging.

Description

technical field [0001] The present invention relates to the technical field of image processing methods, in particular to a multi-band multi-view ISAR fusion imaging method. Background technique [0002] Inverse Synthetic Aperture Radar (Inverse Synthetic Aperture Radar, ISAR) can perform high-resolution imaging of targets at long distances and under all-weather conditions, and has been widely used in military and civilian fields. For a single ISAR imaging system, the distance resolution and azimuth resolution of imaging are usually improved by increasing the transmission signal bandwidth and increasing the observation coherent accumulation time, but at the same time it will bring high hardware complexity, high manufacturing cost, and Problems such as difficulty in motion compensation lead to limited imaging resolution of the directly improved single radar system. Multi-band and multi-angle ISAR fusion imaging technology uses multiple radar echoes obtained from different an...

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Application Information

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IPC IPC(8): G01S13/90
CPCG01S13/9064
Inventor 刘利民郭宝锋朱晓秀胡文华史林马俊涛薛东方曾慧燕
Owner ARMY ENG UNIV OF PLA
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