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Spectral automatic calibration device and method of imaging spectrometer

An imaging spectrometer and automatic calibration technology, applied in the field of photoelectric instruments, can solve problems such as long time, system parameter changes, heavy workload, etc., and achieve accurate calibration results

Inactive Publication Date: 2011-11-02
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large number of bands in the hyperspectral imaging system, manual calibration of each band requires a large workload and takes a long time, and the system parameters may have changed during this process.

Method used

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  • Spectral automatic calibration device and method of imaging spectrometer
  • Spectral automatic calibration device and method of imaging spectrometer
  • Spectral automatic calibration device and method of imaging spectrometer

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Embodiment Construction

[0011] The following is based on figure 2 A preferred embodiment of the present invention is given to further provide technical details of the present invention so as to better illustrate the structural features and functional features of the present invention, but it is not used to limit the scope of the present invention.

[0012] The control circuit is realized by DSP, and three serial ports are extended to communicate with the computer, high-precision steady-current power supply and stepping motor respectively. At the same time, a control line is drawn out to connect with the reflector drive to control the position of the reflector.

[0013] The spectral range of the system under test is 7.7um-9.5um, with a total of 30 spectral channels, and the center wavelength of each channel is shown in Table 1. The optical window of the system under test is aligned with the exit slit of the grating spectrometer.

[0014] Table 1

[0015] channel number

Center waveleng...

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Abstract

The invention discloses a spectral automatic calibration device and a method of an imaging spectrometer, and the spectral automatic calibration device can automatically adjust the strength of a light source and set the starting wavelength, the end wavelength and the scanning step length, and has the self-correction function and has the function of automatically acquiring an infrared wave band spectral curve. The spectral automatic calibration device comprises a calibration light source, a grating spectrometer, a control circuit, a data acquisition electronics system and computer control and drawing software.

Description

Technical field: [0001] The invention relates to photoelectric instrument technology, in particular to a thermal infrared imaging spectrometer spectrum automatic calibration device and method integrating light, machine and electricity. Background technique: [0002] The emergence of hyperspectral remote sensing is a revolution in the field of remote sensing. It enables substances that were not detectable in broadband remote sensing to be detected in hyperspectral remote sensing. Since the continuous band width obtained by the hyperspectral imaging spectroscopy system is generally within 10nm, this kind of data can distinguish those surface materials with diagnostic spectral characteristics with sufficient spectral resolution. The calibration of hyperspectral imaging spectroscopy system is very important for quantitative remote sensing and hyperspectral remote sensing applications. The reliability of remote sensing data and the depth and breadth of its application depend lar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/00G01J3/02
Inventor 林颖徐卫明袁立银
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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