Method for judging earth visibility of moon-based detection platform

Abstract

The invention discloses a method for judging earth visibility of a moon-based detection platform. A DE430 ephemeris file and an observation geometric model between the earth and the moon are utilized;the visibility of the lunar surface to the 18.6-year long period of the earth is calculated, the lunar surface is divided into four areas according to whether the whole disc surface of the earth is visible or not and whether the whole disc surface of the earth is permanently visible or not, and an accurate judgment method for the lunar surface points in different areas is given through a functionanalytic expression method. According to the invention, the visibility of the moon-based detection platform to the whole disc surface of the earth is judged by using a mathematical analytic expression; the method has the advantages of simplicity, convenience, high calculation speed and capability of determining the visibility of the analysis point to the whole disc surface of the earth with relatively high accuracy, and can be used for providing technical support for site selection of a moon-based earth observation system or a moon detection task in the future from the perspective of visibility.

Description

technical field [0001] The invention belongs to the technical field of earth observation of a moon-based detection platform, and in particular relates to a method for discriminating the visibility of the moon-based detection platform to the earth. Background technique [0002] At present, human beings are facing a series of unprecedented global environmental changes, which bring great challenges to human development. In recent years, people have increasingly recognized the need for comprehensive observation of the earth as a whole, and the need to improve large-scale earth observation ability to open up new earth observation platforms. However, the current remote sensing technology based on the satellite-machine-ground platform can only conduct short-term observations of scientific phenomena in limited areas on the earth, and the repeated observation period is long. In terms of detailed and continuous observation of large-scale and dynamic issues on the earth, it is still d...

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