A slit-type spectrometer positioning method for the moon

A positioning method and a spectrometer technology, applied in the field of lunar calibration, can solve problems such as difficult correspondence between right ascension and declination coordinate transformation of equatorial mounts, large observation errors, etc., and achieve rich information acquisition, improved accuracy, and robustness strong effect

Active Publication Date: 2021-06-22
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The present invention aims to solve the technical problem that it is difficult to establish spectral image transformation and the corresponding relationship between right ascension and declination coordinate transformation of the equatorial mount when the slit-type spectrometer, equatorial mount and guide mirror are used to coordinate the observation of the moon on the ground, resulting in large observation errors. , providing a slit-type spectrometer positioning method for the moon

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  • A slit-type spectrometer positioning method for the moon
  • A slit-type spectrometer positioning method for the moon
  • A slit-type spectrometer positioning method for the moon

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[0051] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments do not limit the present invention.

[0052] The invention provides a slit-type spectrometer positioning method for the moon, establishes the corresponding relationship between the change of the lunar image of the spectrometer and the change of the right ascension and declination coordinates of the equatorial turntable, and realizes the precise positioning of the moon by the slit-type spectrometer, which is a long-period The automated ground base provides guarantee for lunar observation.

[0053] Specifically, before starting the observation, first calculate the right ascension correction coefficient pra and declination correction coefficient pdec:

[0054] (1) Select the equatorial mount as the turntable for the slit-type spectrometer to observe t...

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Abstract

The present invention relates to a calibration method for the moon, in order to solve the difficulty in establishing spectral image transformation and the corresponding relationship between the right ascension and declination coordinate transformation of the equatorial mount when using a slit-type spectrometer, an equatorial mount and a guide mirror to cooperate with the ground-based moon observation, To solve the technical problem of causing large observation errors, a slit-type spectrometer positioning method for the moon is provided. By establishing the corresponding relationship between the changes in the lunar image of the slit-type spectrometer and the changes in the right ascension coordinates and declination coordinates of the equatorial mount as a turntable, it can During the moon positioning process, the equatorial mount is accurately corrected to avoid its pointing error, improve the accuracy of the moon calibration, and solve the problem of precise moon positioning by the slit spectrometer.

Description

technical field [0001] The invention relates to a moon calibration method, in particular to a moon positioning method for a slit spectrometer. Background technique [0002] Traditional calibration methods have reached a bottleneck in improving the radiation accuracy of aerospace remote sensor data. As a highly stable radiation source, the moon has become a research consensus at home and abroad to carry out on-orbit calibration to the moon. Relying on ground-based lunar observations to establish a lunar radiation model for the full lunar phase cycle is of great significance for on-orbit lunar calibration. [0003] At present, a slit-type spectrometer and an equatorial mount are often used for lunar calibration. The equatorial mount is a commonly used astronomical observation device, and its function is to offset the influence of the earth's rotation on astronomical observations. The ground-to-moon observation system chooses the equatorial mount as a turntable for stably trac...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28G06F17/10
CPCG01J3/28G06F17/10
Inventor 王一豪王爽李娟刘欢武俊强安玲坪胡炳樑
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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