A Common Main Optical Path Synchronous Atmospheric Correction System Suitable for High Resolution Agile Satellites

Abstract

The present invention is a common main optical path synchronous atmospheric correction system suitable for high-resolution agile satellites. The system uses the main optical path of the high-resolution camera as the pre-atmospheric target energy convergence system of the atmospheric correction instrument, so that the high-resolution camera and the atmospheric correction instrument emit light The axis, field of view and observation area are completely matched; then the high-resolution camera sub-field design is completed, the atmospheric correction instrument and the visible light rear-end optical path are separated into different rear-end optical paths, and finally the time synchronization analysis of the high-resolution image and atmospheric correction data is completed. The method of the present invention solves the problem of synchronous atmospheric correction of high-resolution agile satellites, and proposes an integrated design method that combines the optical path of a high-resolution camera with the main optical path of a synchronous atmospheric correction instrument, and realizes high signal-to-noise ratio and high optical line-of-sight pointing Simultaneous atmospheric correction of high-resolution images with matching accuracy.

Description

technical field [0001] The invention relates to an integrated design method for a common main optical path of a high-resolution camera and a synchronous atmospheric correction instrument, which realizes the synchronous atmospheric correction of the common optical path of a high-resolution agile satellite, and belongs to the field of optical remote sensing satellite-to-earth imaging. Background technique [0002] Atmospheric correction refers to the acquisition of spectral and polarization atmospheric information through time synchronization and spatial coverage detection methods, to achieve high-precision detection and inversion of aerosols and water vapor, and to obtain atmospheric parameters over the imaging area. With this atmospheric parameter as input, the image correction of the high-resolution camera and other images is carried out through the ground atmospheric correction model based on radiation transfer, and a clearer surface image is obtained, which meets the appli...

AI Technical Summary

Problems solved by technology

There are deviations in the boresight pointing and field of view coverage of the two independent payloads, and limited by the size and weight of the satellite, the entrance pupil aperture of the atmospheric correction instrument is often small, and the signal-to-noise ratio of the atmospheric parameters over the imaging area still needs to be further improved

In order to increase the field of view of the atmospheric correction instrument to match the width of the high-resolution camera, it is often necessary to add long-term moving parts such as scanning mirrors or color separation discs. Momentum will reduce the attitude control accuracy and agility of the agile satellite in the imaging mode in motion

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