Low-orbit space target orbit correction method and device and electronic equipment

Abstract

The invention discloses a low-orbit space target orbit correction method, a low-orbit space target orbit correction device and electronic equipment. The method comprises the following steps: selecting a plurality of reference targets which have similar orbits with a main target in a low-orbit space; wherein the similar orbit is determined according to the orbit characteristics of the main target in the low-orbit space; calculating a first track along-track direction error of each reference target; according to the first track along-track direction error of each reference target, calculating a second track along-track direction error of the main target corresponding to the reference target; calculating a final track direction error of the main target according to the second track direction error of the main target corresponding to each reference target; and track correction is carried out on the main target according to the final track along-track direction error of the main target. According to the method, the orbit correction of the main target is realized by utilizing the plurality of reference targets with the similar orbits to the main target, the orbit prediction precision is improved, and the method can be applied to the aspects of spacecraft high-confidence collision early warning, reentry target guide correction and the like.

Description

technical field [0001] The invention belongs to the technical field of aerospace measurement and control, and in particular relates to a method, device and electronic equipment for correcting the orbit of a low-orbit space target. Background technique [0002] Orbit correction refers to the technology of eliminating orbit deviation of spacecraft by using pulse thrust or continuous thrust through certain control methods. Orbit correction is a kind of orbit maneuver technology, which has a wide application background in the fields of spacecraft rendezvous and docking, formation flight, on-orbit assembly, collaborative work, and deep space exploration. [0003] Due to the great influence of atmospheric resistance on low-orbit space, there are large prediction errors in low-orbit space target orbits. The orbit prediction error of low-orbit space targets can be divided into three directions from the spatial direction: vertical error, along-track error, and normal error. The ver...

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Problems solved by technology

[0004] However, there are many factors that affect the density of the atmosphere, and the changes are very complicated, and even the mechanism of the influence of various factors on the density of the atmosphere has not been fully grasped, which has led to the inability of the current various space atmospheric models to accurately reflect the physical characteristics of the global atmosphere , which brings the calculation error of the atmospheric drag effect, which in turn brings the along-track error of the orbit forecast

It can be seen that the uncertainty of the calculation error of the space atmospheric model makes the orbit along-track error the main error source in the orbit calculation dynamic model of the low-orbit space target, which also limits the correction of spacecraft high-confidence collision warning and re-entry target guidance Effect

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