On-board calibration method of laser light source and imaging spectrometer

A technology of imaging spectrometer and laser light source, which is applied in the field of on-board calibration of imaging spectrometer, can solve problems such as calibration error, chemical composition and bandwidth error, reduce difficulty, solve wavelength shift and bandwidth widening, and avoid errors Effect

Active Publication Date: 2018-10-19
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a laser light source and an imaging spectrometer on-board calibration method to solve the problems caused by the ultraviolet components in the sunlight decomposing the chemical composition and bandwidth of the surface of the diffuse reflection plate and the calibration error of the center wavelength. Problems causing on-board calibration errors of the imaging spectrometer

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  • On-board calibration method of laser light source and imaging spectrometer
  • On-board calibration method of laser light source and imaging spectrometer
  • On-board calibration method of laser light source and imaging spectrometer

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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] The embodiment of the present application provides a laser light source, which is applied to on-board calibration of imaging spectrometers, as shown in Figure 1(a) and Figure 1(b), including: a laser 10, an optical fiber 90, a collimating lens group 20, A reflection mirror 30, motor 40, integrating sphere 50, collimation system 60, second reflection mirror 70 and diffuse reflection plate 80; Wherein,

[0036] The optical fiber 90 is used to transmit the...

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Abstract

The application discloses a laser light source and an imaging spectrometer on-board calibration method, wherein the laser light source includes: a laser, an optical fiber, a collimator lens group, a first reflector, a motor, an integrating sphere, a collimation system, and a second reflector and diffuse reflection plate; the laser light source can provide collimated laser light for the space cryoradiometer and the transfer radiometer, so as to realize the calibration of the transfer radiometer by the space cryoradiometer; in addition, the laser source can also provide the transfer radiometer and imaging The spectrometer provides a monochromatic surface light source with uniform radiance to realize the on-board calibration of the imaging spectrometer using the transfer radiometer. Since the laser light source does not contain ultraviolet components, it will not decompose the chemical components on the surface of the diffuse reflection plate, thereby avoiding errors in the on-star calibration of the imaging spectrometer due to changes in the two-way reflectivity of the diffuse reflection plate. Further, the wavelength calibration precision of the monochromatic light source is high, which improves the calibration precision of the imaging spectrometer.

Description

technical field [0001] The present application relates to the technical field of on-board calibration of imaging spectrometers, and more specifically, relates to a laser light source and an on-board calibration method of imaging spectrometers. Background technique [0002] With the development of scientific research, especially in the field of national economy, research on crop yield estimation, mineral exploration, resource survey, environmental monitoring and other issues requires high-precision hyperspectral remote sensing data. Hyperspectral Remote Sensing (HyperspectralRemoteSensing), the full name of hyperspectral resolution remote sensing, refers to the continuous remote sensing imaging of ground objects with a narrow and continuous spectral channel. The most important imaging device is the imaging spectrometer, so the imaging spectrometer On-board calibration accuracy greatly affects the imaging effect of hyperspectral remote sensing. [0003] In the prior art, the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/10G01J3/28G02B27/09
CPCG01J3/10G01J3/2823G01J2003/2866G02B27/0916G02B27/0927
Inventor 叶新孙立微王玉鹏方伟
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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