Imaging spectrometer radiation parameter and imaging parameter calibration device and method

Abstract

The invention provides a visible near-infrared imaging spectrometer radiation parameter and imaging parameter calibration device and method. The calibration device and method use a high-stability large-caliber standard integrating sphere light source with a target interface to be combined with a large-caliber collimator to form collimation radiation which is received by a measured visible near-infrared imaging spectrometer. A standard spectroradiometer calibrated by a spectral radiance standard lamp calibrates the spectral radiance of the exit of the integrating sphere light source and the collimation radiation respectively, so as to achieve full-band radiance high-accuracy calibration of the visible near-infrared imaging spectrometer of a camera system and a telescope system. The measuredvisible near-infrared imaging spectrometer is used to image a series of standard targets mounted on the target interface of the large-caliber standard integrating sphere light source, so as to realize imaging parameter calibration of the measured imaging spectrometer.

Description

technical field [0001] The invention belongs to the field of optical metrology and testing, and relates to a calibration device and method for radiation parameters and imaging parameters, in particular to a high-accuracy calibration device and method for radiation parameters and imaging parameters of a visible-to-near-infrared imaging spectrometer. Background technique [0002] Imaging spectrometers are used to detect, identify and distinguish targets and backgrounds. They are a new generation of advanced military optical reconnaissance systems with "integration of images and spectra", including various multi-spectral and hyperspectral imaging spectrometers from near ultraviolet to far infrared. Imaging spectrometers mainly include dispersion imaging spectrometers (including prism and grating two spectroscopic modes), AOTF tunable acousto-optic imaging spectrometers, and interference imaging spectrometers according to their spectroscopic principles; currently, there are mainl...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the radiation parameters and imaging parameters of the visible near-infrared imaging spectrometer cannot be calibrated with high accuracy in the prior art, the present invention proposes a device and method for calibrating the radiation parameters and imaging parameters of the visible-near-infrared imaging spectrometer, specifically In other words, the calibration device and method utilizes a highly stable large-diameter standard integrating sphere light source with a target interface combined with a large-d...

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