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Microwave three-dimensional imaging method based on multi-phase center observation constrained optimization

A multi-phase center, phase center technology, applied in the field of antenna, radar imaging and signal processing, can solve the problem of no clear and unified imaging method

Active Publication Date: 2014-03-05
济钢防务技术有限公司
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Problems solved by technology

There is no clear and unified imaging method for the microwave three-dimensional imaging mode of the temporal and spatial distribution of multi-phase centers.

Method used

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  • Microwave three-dimensional imaging method based on multi-phase center observation constrained optimization
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  • Microwave three-dimensional imaging method based on multi-phase center observation constrained optimization

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0040] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only re...

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Abstract

The invention discloses a microwave three-dimensional imaging method based on multi-phase center observation constrained optimization. The microwave three-dimensional imaging method comprises the following steps: step A: imaging a target by a multi-phase center; pre-processing a received target echo signal after imaging; step B: carrying out distance attenuation factor compensation and antenna pattern correction processing on the pre-processed echo signal; step C: processing the compensated and corrected echo signal by adopting an observation constrained optimization method; and step D: extracting an observation region three-dimensional microwave scattering image, an observation region scene three-dimensional digital surface model or an observation region scene orthographic projection microwave image from a processing result of the step C. The method is applicable to microwave three-dimensional imaging of uniform synthetic aperture globe observation geometric description under the condition of different sampling constraints and different phase center quantities.

Description

technical field [0001] The invention relates to the technical fields of antenna, radar imaging and signal processing, in particular to a microwave three-dimensional imaging method based on multi-phase central observation constraint optimization. Background technique [0002] The microwave three-dimensional imaging mode based on the temporal and spatial distribution of multi-phase centers can obtain the wavenumber information in the entire three-dimensional space of the observation scene. There is no clear and unified imaging method for the microwave three-dimensional imaging mode of the temporal and spatial distribution of multi-phase centers. The inventors proposed a multi-phase center three-dimensional imaging method in consideration of observation constraints. Contents of the invention [0003] (1) Technical problems to be solved [0004] In order to solve one or more of the above problems, the present invention provides a three-dimensional imaging method based on mul...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90G01S7/40
CPCG01S13/90G01S13/904
Inventor 洪文王彦平谭维贤彭学明林赟丁赤飚
Owner 济钢防务技术有限公司
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