Remote sensing imaging image simulation method and system
A simulation method and remote sensing imaging technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problem of image quality degradation in on-orbit imaging of matrix primary mirror rotation imaging, and achieve the effect of improving imaging quality
Pending Publication Date: 2022-03-01
HARBIN INST OF TECH
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[0005] The purpose of the present invention is to provide a remote sensing imaging image simulation method and system, which solves the problem of on-orbit image quality degradation of the matrix primary mirror rotating imaging of the existing high-resolution rotating synthetic aperture imaging system
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[0068] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.
[0069] The purpose of the present invention is to provide a remote sensing imaging image simulation method and system, which solves the problem of on-orbit image quality degradation of the matrix primary mirror rotating imaging of the existing high-resolution rotating synthetic aperture imaging system.
[0070] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further describe...
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The invention relates to a remote sensing imaging image simulation method and system, and relates to the technical field of optical remote sensing imaging simulation and information processing. The method comprises the following steps: determining a point spread function of a rectangular primary mirror through a pupil function and Fourier transform by using parameters and a rotation angular velocity of the rectangular primary mirror; determining a focal plane image motion track of the focal plane by using a triaxial angular vibration function of a satellite platform and a corresponding relation between a star coordinate system and a focal plane coordinate system; determining a focal plane radiance map corresponding to the scene radiance map by using the point spread function and the focal plane image motion trajectory; an initial simulation image is determined by using a focal plane radiance map and a response function of a detector, and sequence simulation images of all rotation angles of the rectangular primary mirror are determined by combining Gaussian noise. Aiming at the image fuzzy coupling influence caused by the vibration of the satellite platform, the focal plane radiance map corresponding to the scene radiance map is calculated, the radiation simulation images corresponding to different rotation angles of the rectangular primary mirror are obtained, and the imaging quality is improved.
Description
technical field [0001] The invention relates to the technical field of optical remote sensing imaging simulation and information processing, in particular to a remote sensing imaging image simulation method and system. Background technique [0002] Geostationary high-resolution optical remote sensing satellites can obtain optical remote sensing images with high temporal resolution and high spatial resolution, and realize continuous monitoring of specific areas, which is of great significance to national defense security and national economy. Generally, geostationary optical remote sensing satellites rely on large-aperture optical cameras to obtain high-spatial-resolution images. Theoretically, remote sensing imaging with a spatial resolution of 1m to 2m can only be achieved with an optical aperture of more than 10m in geostationary orbit. At present, there are several types of technical approaches that can be used to realize high-resolution optical remote sensing satellites...
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Login to View More IPC IPC(8): G06T17/00G06T7/285G06T7/593G06F17/14
CPCG06T17/00G06T7/285G06T7/596G06F17/14G06T2207/10032
Inventor 智喜洋于芾林巩晋南江世凯宋欣晖
Owner HARBIN INST OF TECH