Solar synchronous orbit spacecraft safety management strategy

Abstract

The invention provides a solar synchronous orbit spacecraft safety management strategy. According to the solar synchronous orbit spacecraft safety management strategy, the distribution characteristics of an existing solar synchronous orbit spacecraft are analyzed; the influence of factors such as the non-spherical perturbation of the earth and atmospheric resistance perturbation on the position of the solar synchronous orbit spacecraft is researched; and the division standards of the orbital position of the solar synchronous orbit spacecraft are provided according the influence, and the solar synchronous orbit spacecraft safety management strategy is formulated. According to the division method provided by the invention, the safety of the passing of the solar synchronous orbit spacecraft at the same orbital height over a polar region is considered, and average local time maintains about 5 minutes, and the safety of the spacecraft can be ensured.

Description

Technical field [0001] The invention belongs to the technical field of sun-synchronous orbit spacecraft safety management, and specifically relates to a sun-synchronous orbit spacecraft safety management strategy. Background technique [0002] As a special space orbit, the main advantage of Sun Synchronous Orbit (SSO) is that the descending node of the spacecraft remains basically unchanged, and the spacecraft flies from the same direction at the same latitude and longitude to the same mean solar time. The use of sun-synchronous orbit can make the spacecraft's energy and the solar altitude angle of the observation target have better characteristics, which has a strong attraction for the spacecraft's ground observation field. [0003] The spacecraft database published by the Union of Concerned Scientists shows that as of December 31, 2016, there were 1,459 spacecraft in orbit. Among the 803 spacecraft in low-Earth orbit, the spacecraft were in sun-synchronous orbit. There are 394, ...

AI Technical Summary

Problems solved by technology

Since sun-synchronous orbit spacecraft are all in near-polar orbits, if this method is followed, sun-synchronous orbit spacecraft will pass over the polar regions in a concentrated manner, bringing a great risk of collision

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