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Method for In-Orbit Redesign for TianQin Orbit Configuration

ADVANCES IN SPACE RESEARCH(2023)

Sun Yat Sen Univ Zhuhai Campus

Cited 2|Views11
Abstract
The space-based gravitational wave observatory mission consists of three drag-free controlled spacecraft, which form an equilateral triangle configuration. Due to the injection error, the configuration will deviate from the originally designed one, and the injection configuration cannot keep stability for a long term, which will affect the performance of the gravitational wave detection. In this study, we propose a method for reconfiguration using multiple-revolution Lambert solutions. In addition, assuming that the real-time data of spacecraft’s motion states can be obtained with high accuracy and the propulsion system can ensure the magnitude and accuracy of maneuvers, and taking the cost of reconfiguration and configuration stability requirements into account, a novel method of redesigning configuration based on differential evolution algorithm is proposed. Finally, the numerical simulations show that the redesigned configuration not only can reduce the maneuver cost significantly, but also can meet the requirements of long-term stability requirements.
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Key words
Space-based gravitational wave observatory mission,TianQin,Orbit optimization,Lambert’s problem,Constellation reconfiguration
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要点】:本研究提出了一种基于多圈 Lambert 解的轨道配置重设计方法,采用差分进化算法优化配置,以解决空间引力波观测任务中由于注入误差导致的轨道配置偏差问题。

方法】:采用多圈 Lambert 解进行轨道配置重设计,并结合差分进化算法优化配置。

实验】:通过数值模拟验证了该方法的有效性,实验使用的数据集为模拟的航天器运动状态数据,结果显示重设计后的配置能有效降低操纵成本并满足长期稳定性要求。