A method for obtaining the irradiance of the lunar disk in the whole lunar phase cycle of a slit spectrometer

Abstract

The invention relates to a method for obtaining lunar disk irradiance. In order to solve the current method of obtaining lunar irradiation data through a ground-based lunar observation system, the center and radius of the lunar contour area can only be calculated more accurately at the time of the full moon, and the full moon phase cannot be obtained. To solve the technical problem of periodic lunar irradiance data, provide a method for obtaining the irradiance of the lunar disc with a slit-type spectrometer in the whole lunar phase cycle, including S1, preprocessing the scan data of the slit-type spectrometer to obtain a lunar spectral data cube; S2 , to obtain the characteristic band grayscale image from the lunar spectral data cube; S3, extract the lunar binary image from the characteristic band grayscale image through the threshold segmentation method; S4, obtain the boundary points of the lunar binary image through the integral operation; S5, Judging the lunar phase cycle; S6, according to the lunar phase cycle, through the boundary points of the binary image of the moon, the three-point method is used to obtain the moon’s outline on the characteristic band grayscale image; S7, the full-moon irradiance integration is performed on the area inside the moon’s outline, Get the lunar disk irradiance.

Description

Technical field [0001] The present invention relates to a method for obtaining irradiance month disc, particularly to a spectrometer slit disc full month month period irradiance phase acquisition method. Background technique [0002] The traditional calibration methods for aerospace remote sensing data to enhance the accuracy of radiation has reached a bottleneck, the moon as a highly stable source of radiation, to carry out in-orbit calibration of the month has become the consensus of research at home and abroad. Rely on ground-to-month observation period to establish full moon phase lunar radiation model, the orbit is important for monthly calibration. [0003] Foundation using a slit type spectrometer system as lunar month observation radiation monitoring device used as a stabilizer equatorial tracking turntable moon acquisition mode to move to the equatorial position of the moon in the future, the slit perpendicular to the direction of movement of the moon, the moon across th...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem that the current method of obtaining lunar radiation data through the ground-based lunar observation system can only accurately calculate the center and radius of the lunar contour area at the time of full moon, and cannot obtain the lunar radiation data of the full moon phase cycle. Provides a method for obtaining the irradiance of the lunar disc in the whole lunar phase cycle of a slit spectrometer

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