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黄翔宇, 徐超, 胡荣海, 李茂登, 郭敏文, 胡锦昌. 火星精确定点着陆多信息融合自主导航与控制方法研究[J]. 深空探测学报(中英文), 2019, 6(4): 348-357. DOI: 10.15982/j.issn.2095-7777.2019.04.006
引用本文: 黄翔宇, 徐超, 胡荣海, 李茂登, 郭敏文, 胡锦昌. 火星精确定点着陆多信息融合自主导航与控制方法研究[J]. 深空探测学报(中英文), 2019, 6(4): 348-357. DOI: 10.15982/j.issn.2095-7777.2019.04.006
HUANG Xiangyu, XU Chao, HU Ronghai, LI Maodeng, GUO Minwen, HU Jinchang. Research of Autonomous Navigation and Control Scheme Based on Multi-Information Fusion for Mars Pinpoint Landing[J]. Journal of Deep Space Exploration, 2019, 6(4): 348-357. DOI: 10.15982/j.issn.2095-7777.2019.04.006
Citation: HUANG Xiangyu, XU Chao, HU Ronghai, LI Maodeng, GUO Minwen, HU Jinchang. Research of Autonomous Navigation and Control Scheme Based on Multi-Information Fusion for Mars Pinpoint Landing[J]. Journal of Deep Space Exploration, 2019, 6(4): 348-357. DOI: 10.15982/j.issn.2095-7777.2019.04.006

火星精确定点着陆多信息融合自主导航与控制方法研究

Research of Autonomous Navigation and Control Scheme Based on Multi-Information Fusion for Mars Pinpoint Landing

  • 摘要: 针对火星定点采样、载人登陆和基地构建等任务的需求,提出了一种火星精确定点着陆多信息融合自主导航与控制(Guidance Navigation and Control,GNC)方案。针对大气进入前的高精度导航需求,提出了基于X射线脉冲星和火星表面陆标图像的融合自主导航方法;针对火星着陆探测进入、下降和着陆(Entry,Descent and Landing,EDL)过程的高精度绝对和相对导航需求,提出了基于陆标图像、IMU(Inertial Measurement Unit)和测距测速信息的多信息融合自主导航方法;针对精确定点着陆要求,设计了大气进入和动力下降过程的制导与控制算法。数学仿真结果表明,提出的方案能够实现高精度的定点着陆(精度100 m)和相对避障(精度为0.5 m),可满足任务需求。

     

    Abstract: An autonomous guidance,navigation and control(GNC)scheme based on multi-information fusion is proposed for Mars pinpoint landing mission. Before entering the Mars atmosphere,an autonomous navigation scheme fusing X-Ray pulsars and Mars landmark images is employed to satisfy the requirement of high precision navigation. Then,during Mars entry,descent and landing(EDL)phase,a multi-information fusion navigation scheme is constructed for absolute and relative navigation with high precision, which consists of Mars landmark images, inertial measurement unit (IMU) and ranging and velocity sensors. With the demands of pinpoint landing, a guidance and control algorithm is also designed for Mars atmosphere entry phase and powered descent phase. Finally,numerical simulation is performed,which indicates that the landing accuracy is better than 100 m and the hazard avoidance accuracy is around 0.5 m when adopting the proposed GNC scheme.

     

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