Linear array three-dimensional imaging synthetic aperture radar fast imaging method

Abstract

The invention provides a linear array three-dimensional imaging synthetic aperture radar rapid imaging method based on multiresolution approach, which aims at the characteristic that an actual linear array three-dimensional imaging synthetic aperture radar echo only contains echoed signals with certain curved signal in a three-dimensional space, and adopts the multiresolution approach technique to carry out imaging processing for a certain curved surface in the three-dimensional space. The invention solves the problem that the calculating amount of a three-dimensional imaging synthetic aperture radar imaging method is large. Compared with the prior three-dimensional imaging synthetic aperture radar imaging calculation, the invention utilizes less calculating amount to realize linear array three-dimensional imaging synthetic aperture radar. The invention can be applied to the fields of synthetic aperture radar image, earth remote sensing, and the like.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to the technical field of linear array three-dimensional synthetic aperture radar (SAR) imaging. Background technique [0002] Linear array three-dimensional imaging synthetic aperture radar (LASAR) is a new type of synthetic aperture radar system that fixes the linear array antenna on a moving platform to synthesize a two-dimensional planar array and perform three-dimensional imaging. Linear array three-dimensional imaging synthetic aperture radar can realize the ability of imaging three-dimensional ground which cannot be realized by single-antenna synthetic aperture radar at present, and has become a research hotspot in the field of synthetic aperture radar. According to the inventor's knowledge and published literature, for example: M.Weiβ, J.H.G.Ender "A 3D imaging radar for smallunmanned airplanes-ARTINO" Radar Conference, 2005.EURAD 2005.BASSEMR.MAHAFZA and MITCH SAJ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that the existing linear array three-dimensional imaging synthetic aperture radar imaging method has a large amount of computation, the present invention provides a linear array three-dimensional imaging synthetic aperture radar fast imaging method. Contains the characteristics of the echo signal of a specific surface in 3D space, adopts multi-resolution approximation technology, and performs imaging processing for a specific surface in 3D space, thus solving the problem of large amount of computation in the 3D imaging synthetic aperture radar imaging method

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