Portable multi-functional light source for imaging spectrometer calibration and calibration method

Abstract

The invention discloses a portable multi-functional light source for imaging spectrometer calibration and a calibration method. The multi-functional light source comprises a light-emitting device, an engineering scattering sheet and an absorption cell. The light-emitting device is used for setting a light source according to the working wave band requirement of a to-be-calibrated imaging spectrometer and providing incident light for the engineering scattering sheet. The engineering scattering sheet is used for receiving and diffusing the incident light and then outputting a surface light source with uniform intensity to the absorption cell. The absorption cell is used for exciting element energy level transition in the absorption cell by using the received surface light source to obtain a third light source for calibrating the to-be-calibrated imaging spectrometer. The components, the air pressure and the length in the absorption cell are determined according to the spectral response range and the resolution ratio of the to-be-calibrated imaging spectrometer. The invention provides a portable, adjustable, flexible and switchable high-precision calibration light source with a wide coverage wavelength range, and calibration of imaging nonuniformity, spectral resolution and wavelength of an imaging spectrometer can be carried out at the same time.

Description

technical field [0001] The invention relates to the field of remote sensing observation, including imaging spectrum observation of the sky (celestial bodies such as the sun and stars) and the earth, covering the space environment of the sky and the ground, astronomical detection, and remote sensing observation of the atmosphere. In particular, it relates to a multifunctional light source system used for calibrating parts of imaging spectral telemetry equipment or the whole system, and provides a method for calibrating the spectral resolution and wavelength of the whole machine by using the device. Background technique [0002] Classified according to the positional relationship between the detector and the detection object, the existing detection methods can be divided into two categories: in-situ detection and remote sensing observation. For the detection of distant celestial bodies, such as the sun, stars or galaxies, planets in the solar system or terrestrial planets, and...

AI Technical Summary

Problems solved by technology

The monochromator method and the adjustable laser method can only be used in the laboratory due to the complexity of the calibration device. For instruments that need to be debugged outdoors, in the field or in a specific place, these two methods are difficult to meet the calibration requirements

Images