Method for quickly imaging for double-linear-array three-dimensional imaging synthetic aperture radar

Abstract

The invention provides a method for quickly imaging for a double-linear-array three-dimensional imaging synthetic aperture radar on the basis of self-adaption, which aims at the characteristic that an echo wave of an actual double-linear-array three-dimensional imaging synthetic aperture radar only comprises an echo wave signal of a specific curved surface in a three-dimensional space. A self-adaptive curved surface prediction technique is adopted to carry out curved surface prediction and imaging processing aiming at the specific curved surface in the three-dimensional space so as to better solve the problem of large computation workload of the prior imaging method of the double-linear-array three-dimensional imaging synthetic aperture radar. The method can be applied to the fields of the synthetic aperture radar imaging, the earth remote sensing, the geology surveying and drawing, and the like.

Description

technical field [0001] The technical invention belongs to the technical field of radar, and in particular relates to the technical field of synthetic aperture radar (SAR) imaging. Background technique [0002] Three-dimensional imaging is an important feature that distinguishes three-dimensional imaging synthetic aperture radar (SAR) from other remote sensing imaging systems. Due to its wide surveying and mapping range, all-weather and all-weather characteristics, it has broad applications in terrain surveying and mapping, environmental detection, disaster forecasting, etc. prospect. [0003] The current technologies related to 3D SAR mainly include Interferometric SAR (InSAR) technology, Curvilinear SAR technology (CSAR) and Linear Array SAR (LASAR) technology. Interferometry is a SAR imaging technology without third-dimensional resolution capability, and it cannot provide accurate three-dimensional reconstruction capability theoretically. Curvilinear SAR must set the fli...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem of large amount of calculation in the existing three-dimensional imaging synthetic aperture radar imaging method, and to provide a two-station linear array three-dimensional synthetic aperture radar fast imaging method, which combines the three-dimensional imaging problem of three-dimensional synthetic aperture radar Transformed into a two-dimensional imaging problem, it greatly reduces the computational load of the two-station linear array three-dimensional imaging synthetic aperture radar, and realizes three-dimensional spatial imaging of large scenes

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