Full-field integral time determining method for satellite-borne linear array push broom camera

Abstract

The invention relates to a full-field integral time determining method for satellite-borne linear array push broom camera. The full-field integral time determining method for the satellite-borne linear array push broom camera comprises the following steps:1, acquiring a simulation input data of a total factor modeling; 2, building a generalized imaging model with high precision, the imaging model parameter comprises an observation time range of a scene imaging, an orbit of a satellite, a posture, a satellite measurement coordinate system, a directional angle of a single pixel in a satellite system and an altitude data of an imaging region; 3, data obtaining and data processing of the imaging model; 4, repeating steps 1 to 3, calculating the integral time of pixels at different positions of the focal plane of a remote sensor one by one, and determining the full-field integral time of the camera. According to the full-field integral time determining method for the satellite-borne linear array push broom camera, the earth rotation, the curvature of the earth and the hypsograpgy are comprehensively considered, the integral time of pixels at different positions of the focal plane of a remote sensor are accurately calculated, and providing evidence for analyzing the influence of different integral time packet mode of the full-field camera to the imaging quality and setting out reasonable strategy for the integral time adjustment.

Description

technical field [0001] The invention relates to a method for determining the full field of view integration time of a space-borne linear array push-broom camera, in particular to a method for determining the imaging quality of a space-borne single-unit single-projection center medium spatial resolution large field of view camera or an optically agile satellite. The wide-format camera is composed of multiple high-spatial-resolution single-projection center high-resolution cameras. This method gives the result of determining the field of view integration time corresponding to the viewing direction of the pixel at different positions on the focal plane of the camera's full-field of view. Background technique [0002] In the field of optical remote sensing, the transmission-type linear array push-broom space camera with Charge Coupled Device (CCD for short) as the focal plane detector is increasingly becoming the mainstream, and is widely used in land and land resource exploratio...

AI Technical Summary

Problems solved by technology

The disadvantage is that the relationship between the instantaneous field of view (IFOV) and the field of view is simplified in these derivations, the imaging model is highly targeted to a specific optical system, and the satellite imaging model is not universal. When calculating the integration time, the curvature of the earth is not considered, which will affect the calculation accuracy of the integration time

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