Geometric calibration device of push-broom type imaging spectrometer

Abstract

The invention discloses a geometric calibration device of a push-broom type imaging spectrometer. The geometric calibration device comprises a light source system, a slit micro-motion system, a collimation system, and an oscillating mirror system, wherein the slit micro-motion system is arranged between the light source system and the collimation system, the light source system is used for emitting continuous light to the slit micro-motion system, the slit micro-motion system is used for adjusting an incident angle of light rays entering the collimation system, and the collimation system is used for transforming the light rays adjusted by means of the slit micro-motion system into collimated light rays to enter the oscillating mirror system, and the oscillating mirror system is used for adjusting an incident angle of light rays entering a detector of the imaging spectrometer to be calibrated. The geometric calibration device of the push-broom type imaging spectrometer can realize the fine oscillating sweeping of a single pixel of the imaging spectrometer to be calibrated, so as to complete the geometric calibration of the imaging spectrometer to be calibrated, and can solve the problem of expensive manufacturing cost due to the configuration of corresponding equipment, thereby being capable of reducing the research and development costs of the geometric calibration device to acertain extent.

Description

technical field [0001] The invention relates to the technical field of spectral imaging, in particular to a geometric calibration device for a push-broom imaging spectrometer. Background technique [0002] The push-broom imaging spectrometer can obtain one-dimensional spectral information and two-dimensional image information of the target at the same time, and is widely used in astronomy, geology, chemical industry, medical treatment and other fields. [0003] During the application of imaging spectrometers, users hope to obtain real, accurate, and undistorted image information and spectral information. The accuracy of the target spatial position directly affects the quality of information capture, especially in the military field. Misjudgment of this kind of information capture will lead to disastrous consequences. Therefore, before the imaging spectrometer is used, it is very important to verify the stability of its working performance through the detection and evaluatio...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a geometric calibration device for a push-broom imaging spectrometer, which can realize the fine sweep of a single pixel of the imaging spectrometer to be calibrated, thereby completing the geometric calibration of the imaging spectrometer to be calibrated , which can solve the problem of high cost due to high-precision, high-resolution rotary table, which can reduce the R&D cost of geometric calibration device

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