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arXiv 2403.08893math.AG
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用代数射影几何求解吉布斯问题

Solving the Gibbs Problem with Algebraic Projective Geometry

Michela Mancini, John A. Christian

AI总结:

本文提出用代数射影几何求解吉布斯问题,即从三个位置矢量进行轨道确定,给出一种新颖的以原点为焦点的椭圆代数拟合方法,结果与经典矢量分析法一致。

摘要:

从三个位置矢量进行轨道确定(OD)是天体动力学中的经典问题之一。J. Willard Gibbs 在19世纪末对该问题做出了早期贡献,此类轨道确定如今被称为“吉布斯问题”。针对吉布斯问题已有多种流行的解法。虽然一些作者直接求解轨道要素,但大多数当代讨论基于受 Gibbs 本人启发的矢量分析方法。\n\n本工作提出了一种与上述方法完全不同的解法。尽管矢量分析方法并无不妥,但从代数射影几何的角度考虑该问题可能会获得一些有趣的见解。本文给出了这样一种代数解法。该轨道确定过程基于一种新颖且具有几何意义的椭圆代数拟合解法,该椭圆以原点为焦点,仅使用三个点进行拟合。虽然最终的轨道确定结果与 Gibbs 开创的经典矢量分析方法相同,但这种新的代数解法本身也很有趣。

英文摘要:

Orbit determination (OD) from three position vectors is one of the classical problems in astrodynamics. Early contributions to this problem were made by J. Willard Gibbs in the late 1800s and OD of this type is known today as ``Gibbs Problem''. There are a variety of popular solutions to the Gibbs problem. While some authors solve for the orbital elements directly, most contemporary discussions are based on a vector analysis approach inspired by Gibbs himself. This work presents a completely different solution to those just described. Although there is nothing wrong with the vector analysis approach, some interesting insights may be gained by considering the problem from the perspective of algebraic projective geometry. Such an algebraic solution is presented here. The OD procedure is based upon a novel and geometrically meaningful solution to the algebraic fitting of an ellipse with a focus at the origin using only three points. Although the final OD result is identical to the classical vector analysis approach pioneered by Gibbs, this new algebraic solution is interesting in its own right.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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