Grating spectrometer on-board spectrum calibration and instrument linear function monitoring device

A grating spectrometer and spectral calibration technology, which is applied in the field of on-board spectral calibration of grating spectrometers and instrument linear function monitoring devices, can solve problems such as inability to perform on-board spectral calibration, and can meet the requirements of spectral calibration accuracy, simple structure, and improved performance. The effect of precision

Pending Publication Date: 2020-09-04
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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However, a laser diode can only correspond to one wavele

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  • Grating spectrometer on-board spectrum calibration and instrument linear function monitoring device
  • Grating spectrometer on-board spectrum calibration and instrument linear function monitoring device
  • Grating spectrometer on-board spectrum calibration and instrument linear function monitoring device

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[0023] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0024] figure 1 It is a structural diagram of the on-board spectrum calibration of the grating spectrometer and the in...

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Abstract

The invention discloses a grating spectrometer on-board spectrum calibration and instrument linear function monitoring device. The device comprises a main force bearing frame, a laser beam combining system, a light uniformizing system and a collimation system. The laser beam combining system comprises a calibration light source unit combination, a color separation sheet combination, a reflector, abeam splitter and a supporting vertical plate. The light uniformizing system comprises an integrating sphere and a diaphragm; the collimation system comprises a reflecting mirror I, a reflecting mirror II and an optical filter; different calibration wavelength light sources emitted by the calibration light source unit combination are subjected to light path beam combination through the color separation sheet combination, the reflector and the beam splitter to obtain a combined light path, and finally, the combined light path irradiates into the light uniformizing system; the integrating sphere carries out light uniformizing processing on the combined light path and then, the combined light path enters the collimation system through the diaphragm; and the optical filter attenuates the light intensity of the combined light path after the light uniformizing treatment to obtain attenuated light, and the attenuated light is emitted out after being collimated by the reflecting mirror I andthe reflecting mirror II in sequence. According to the invention, on-board spectrum calibration and instrument linear function monitoring of the grating spectrometer are realized.

Description

technical field [0001] The invention belongs to the technical field of spectrum calibration, and in particular relates to a grating spectrometer on-board spectrum calibration and instrument linear function monitoring device. Background technique [0002] On-board spectral calibration is the basis for quantitative application of spectrometer payload data. In addition to using external calibration sources (atmospheric absorption lines, solar Furlong and Ferrand lines) for on-board spectral calibration, more and more payloads use internal calibration sources for on-board spectral calibration. Because the internal calibration source can be simulated and tested on the ground, and the on-orbit calibration does not require the cooperation of satellite orbit and attitude, it is more convenient. [0003] MODIS uses an integrating sphere light source, a filter wheel, a monochromator system and a Cassegrain beam expander to form a spectral radiation calibration device. However, the d...

Claims

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Application Information

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IPC IPC(8): G01J3/02G01J3/28
CPCG01J3/0297G01J3/28
Inventor 刘宇翔安宁石峰肖大舟鲁之君李明马越杜国军欧宗耀岳鹏远耿振华汪勇
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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