High-inclination near-circular orbits are valuable for Europa’s global observation. However, the eccentricity drifts due to Jovian third-body gravity and Europa’s non-spherical gravity perturbations. Previous studies have concentrated on long lifetime orbits, but seldom maintained the orbits with low-thrust propulsion. In this work, we propose methods for designing near-circle and high-inclination artificial frozen orbits around Europa. The design method is separated into two parts. First, based on an analytical method, two frozen strategies are developed for maintaining the Europa probe, which use indirect and direct neutralization of the eccentricity drift, respectively. The analysis of the evolution characteristic of the artificial frozen orbit is presented. Second, through a semi-analytical approach, fuel-optimal low-thrust strategies which satisfy the proposed frozen strategies are derived to generate the artificial frozen orbits. Numerical simulations show that these artificial orbits have the ability of achieving the frozen behavior, with acceptable required velocity increments. The low-cost control strategies are also obtained.

高倾角近圆形轨道对木卫二的全球观测很有价值。然而，偏心率会由于木星第三体引力和木卫二的非球面引力扰动而漂移。以前的研究集中在长寿命轨道上，但很少用低推力推进来维持轨道。在这项工作中，我们提出了设计围绕木卫二的近圆和高倾角人工冻结轨道的方法。设计方法分为两部分。首先，基于分析方法，开发了两种用于维护木卫二探测器的冻结策略，分别使用间接和直接中和偏心漂移。分析了人工冻结轨道的演化特征。其次，通过半解析的方法，推导出满足所提出的冻结策略的燃料最优低推力策略来生成人工冻结轨道。数值模拟表明，这些人造轨道能够以可接受的所需速度增量实现冻结行为。还获得了低成本的控制策略。