On-orbit spectrum calibration method of hyperspectral remote sensor based on atmospheric profile and LED

A technology of hyperspectral remote sensing and spectral calibration, applied in spectrum survey and other directions, can solve the problems of single calibration method and low calibration accuracy, and achieve the effect of improving accuracy, improving stability, and ensuring reliability and value.

Active Publication Date: 2019-04-19
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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[0004] The present invention proposes an on-orbit spectral calibration method for hyperspectral remote sensors based on atmospheric profiles and LEDs. Atmospheric profile calibration and LED calibration technology mutually verify the ...

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  • On-orbit spectrum calibration method of hyperspectral remote sensor based on atmospheric profile and LED
  • On-orbit spectrum calibration method of hyperspectral remote sensor based on atmospheric profile and LED
  • On-orbit spectrum calibration method of hyperspectral remote sensor based on atmospheric profile and LED

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[0036] In order to make the purpose, features and advantages of the present invention clearer, a specific embodiment of the present invention is described in more detail below in conjunction with the examples. In the following description, many specific details are set forth in order to fully It is understood that the present invention can be understood, but the present invention can be implemented in many other ways than described, therefore, the present invention is not limited by the specific embodiments disclosed below.

[0037] A hyperspectral remote sensor on-orbit spectral calibration method based on atmospheric profiles and LEDs, specifically comprising the following steps:

[0038] S1. Establish the spectral response function of each channel of the known atmospheric profile absorption band hyperspectral remote sensor:

[0039]

[0040] λ is the known absorption wavelength of the atmospheric profile; λ c (i) is the center wavelength of channel i before calibration,...

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Abstract

The invention discloses an on-orbit spectrum calibration method of a hyperspectral remote sensor based on an atmospheric profile and an LED. The method includes the steps of separately utilizing the known atmospheric profile and an LED spectrum to calibrate and correct spectrum deviation of the hyperspectral remote sensor, comparing a spectral calibration result based on the atmospheric profile with a spectral calibration result based on the LED, analyzing the comparison result, and determining that the spectral calibration precision of the hyperspectral remote sensor is reached if the difference between the two calibration results is not greater than 5%. The method aims to overcome the defects of existing on-orbit calibration technologies of the hyperspectral remote sensors, combine an atmospheric profile calibration technology with an LED calibration technology, mutually verify the calibration results of different spectra, improve the on-orbit spectrum calibration precision of the hyperspectral remote sensor, and correspondingly ensure the reliability and value of quantitative application of remote sensing data.

Description

technical field [0001] The invention belongs to the field of optical remote sensing science, and relates to an on-orbit spectrum calibration method of a hyperspectral remote sensor based on an atmospheric profile and an LED. Background technique [0002] Hyperspectral imaging technology is a remote sensing technology developed in the 1980s. Different from traditional spectrometers, hyperspectral imaging technology integrates image and spectrum (integration of map and spectrum). Simultaneously acquire the continuous and fine spectral information of the target, which greatly improves the detection capability of space remote sensing, and has important applications in the fields of national defense, military, land and resource investigation, agricultural production estimation, environmental monitoring, and atmospheric detection. High-precision calibration is the premise and basis for the quantitative application of hyperspectral remote sensors. Before the launch of hyperspectral...

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Application Information

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IPC IPC(8): G01J3/28
CPCG01J3/28
Inventor 刘银年刘辉张静孙德新贾晓伟冯雪飞
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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