Mission Analysis for the EM-1 CubeSats EQUULEUS and OMOTENASHI-猫眼课题宝

DOI：

10.1109/maes.2019.2916291

发表时间：

2019-04

期刊：

IEEE Aerospace and Electronic Systems Magazine

影响因子：

3.6

通讯作者：

中科院分区：

工程技术3区

文献类型：

作者：

S. Campagnola;Javier Hernando-Ayuso;K. Kakihara;Yosuke Kawabata;Takuya Chikazawa;R. Funase;N. Ozaki;N. Baresi;T. Hashimoto;Y. Kawakatsu;Toshinori Ikenaga;K. Oguri;K. Oshima

OMOTENASHE和EQUULEUS是JAXA和东京大学联合发射的两颗6-U立方体卫星，将于2019年随NASA的探索任务1号一起发射。本文介绍了标称轨迹，并概述了任务分析工作和方法。EQUULEUS轨道利用地球-太阳-月球动力学将航天器捕获到地球-月球L2点周围的振动轨道上，仅使用-10 m/s的确定性Av。然而，由于轨道确定（由于有限的地面站可用性）和执行错误的预期有限性能，任务分析成本和复杂性受到统计机动的驱动。OMOTENASHE任务分析需要多次迭代，在设计空间中评估对错误的鲁棒性。结果发现，飞船应以-5°左右的浅飞行路径角接近月球，避开陨石坑边缘和山脉，并在130 m左右的高度开始自由落体。对于这两项任务，最初一周的操作，包括Avl的执行，是至关重要的，地面站的支持正在由JAXA和国际合作伙伴的团队协商。

OMOTENASHE and EQUULEUS are two 6-U CubeSats by JAXA and The University of Tokyo to be launched in 2019 onboard of NASA's Exploration Mission 1. This paper presents the nominal trajectories and an overview of the mission analysis work and approaches. EQUULEUS trajectory exploits the Earth -Sun -Moon dynamics to capture the spacecraft into a libration orbit around the Earth -Moon L2 point, using only -10 m/s of deterministic Av. Mission analysis cost and complexity, however, are driven by the statistical maneuvers because of the expected limited performances in orbit determination (because of limited ground station availability) and execution errors. OMOTENASHE mission analysis requires multiple iterations where the robustness to errors is evaluated over the design space. It is found that the spacecraft should approach the Moon with a shallow flight path angle of about -5°, avoid crater rims and mountains, and start the free fall at about 130 m height. For both missions, the initial week of operations, including Avl execution, is critical, and ground station support is being negotiated by the teams with JAXA and with international partners.

Mission Analysis for the EM-1 CubeSats EQUULEUS and OMOTENASHI

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