An airborne interferometric synthetic aperture radar complex scene elevation inversion method and system

Abstract

The invention provides an airborne interferometric synthetic aperture radar complex scene elevation inversion method and system, the method comprising: obtaining a plurality of single-view complex image pairs of the same complex scene to be detected at opposite angles in the fly-by-flight mode; All single-view complex image pairs obtain coordinate information in different coordinate systems of each single-view complex image pair, and each coordinate information contains a corresponding first height information; for each coordinate of all single-view complex image pairs Information, respectively mapped in the same coordinate system for coordinate conversion, to obtain each coordinate information after conversion and the second height information after conversion of the corresponding first height information; for each coordinate information after multiple coordinate conversions and the second height information The height information is gridded separately to generate each coordinate information containing the third height information; according to the preset fusion strategy, pixel fusion processing is performed on multiple coordinate information containing the third height information to generate the coordinate information of the complex scene to be detected. Highly inverted information.

Description

technical field [0001] The invention relates to the field of airborne interferometric synthetic aperture radar, in particular to an elevation inversion method and system for an airborne interferometric synthetic aperture radar complex scene. Background technique [0002] Elevation inversion of complex scenes is a key problem to be solved by airborne interferometric synthetic aperture radar. Elevation inversion. At the same time, low-coherence areas such as overlapping and shadows are more prominent in complex scenes, which has caused great difficulties in the interferometric processing step. Traditional interferometric processing cannot obtain effective elevation data in low-coherence areas, which easily causes the lack of elevation data in the scene. [0003] The current method of dealing with the height inversion of complex scenes mainly uses a single flight mode, then performs traditional interferometric processing for height inversion, and then directly interpolates the...

AI Technical Summary

Problems solved by technology

) conditions, conventional interferometric processing cannot satisfy high-precision elevation inversion

At the same time, low-coherence areas such as overlap and shadow are more prominent in complex scenes, which causes great difficulties in the interference processing step. Traditional interference processing cannot obtain effective elevation data in low-coherence areas, which easily causes the lack of elevation data in the scene.

[0003] The current method of dealing with the height inversion of complex scenes mainly uses a single flight mode, then performs traditional interferometric processing for height inversion, and then directly interpolates the height information of the low-coherence area, resulting in low height accuracy of the low-coherence area. Unable to meet the needs of high-precision geographic surveying and mapping

Images