Optical satellite TDICCD integration series and gain setting method and imaging device

Abstract

The invention discloses an optical satellite TDICCD integration series and gain setting method and an imaging device. The method comprises the steps that S1, carrying out scene synthesis reflectivity calculation based on a surface reflectance data set in an imaging range; S2, based on the scene synthetic reflectivity obtained in the S1, simulating a geogas interaction process by combining an atmospheric radiation transfer model, and calculating entrance pupil radiance of the TDICCD optical camera by adopting a 6S atmospheric radiation transfer model; and S3, calculating the optimal integral series and gain: searching the optimal integral series and gain based on the entrance pupil radiation brightness of the TDICCD optical camera in the S2 and the optical satellite load characteristic model. According to the invention, the optimal integral series and gain can be adaptively set along with the continuous change condition of an imaging scene, the performance of the optical camera can be exerted to the greatest extent, and the imaging quality of the camera is improved.

Description

technical field [0001] The invention relates to the technical field of space remote sensing, in particular to an optical satellite TDICCD integration series and gain setting method and an imaging device. Background technique [0002] With the continuous advancement of space remote sensing technology, quantitative extraction of remote sensing data information has become the main development direction, and improving the quality of space remote sensing data has become one of the current research priorities. The radiation signals obtained by space remote sensing cameras include surface target radiation signals and atmospheric radiation signals. The properties of the earth's surface and the state of the earth's atmosphere are constantly changing. Using fixed exposure parameters in the imaging process of remote sensing images will lead to images that are too bright, too dark, or have a small dynamic range, resulting in the lack of image information, so the automatic dimming method...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned existing technologies all start from the sensor’s own index parameters, and complete the optimal integration series and gain settings through the corresponding index parameters, without considering the reflection characteristics of ground objects in the imaging scene

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