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Interactive method research of dual mode information coordination integration for astronaut gesture and eye movement signals based on hybrid model

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Science China(Technological Sciences) 2023年第6期66卷 1717-1733页

作者： ZHUANG HongChao XIA YiLu WANG Ning LI WeiHua DONG Lei LI Bo School of Mechanical engineering Tianjin University of Technology and EducationTianjin 300222China School of Information Technology engineering Tianjin University of Technology and EducationTianjin 300222China School of Automotive engineering Harbin Institute of Technology(Weihai)Weihai 264209China Tianjin Institute of aerospace Mechanical and Electrical Equipment Tianjin 300458China School of Mechatronics engineering Harbin Institute of TechnologyHarbin 150000China

The lightweight human-robot interaction model with high real-time,high accuracy,and strong anti-interference capability can be better applied to future lunar surface exploration and construction *** on the feature information inputted from the monocular camera,the signal acquisition and processing fusion of the astronaut gesture and eye-movement modal interaction can be *** with the single mode,the human-robot interaction model of bimodal collaboration can achieve the issuance of complex interactive commands more *** optimization of the target detection model is executed by inserting attention into YOLOv4 and filtering image motion *** central coordinates of pupils are identified by the neural network to realize the human-robot interaction in the eye movement *** fusion between the astronaut gesture signal and eye movement signal is performed at the end of the collaborative model to achieve complex command interactions based on a lightweight *** dataset used in the network training is enhanced and extended to simulate the realistic lunar space interaction *** human-robot interaction effects of complex commands in the single mode are compared with those of complex commands in the bimodal *** experimental results show that the concatenated interaction model of the astronaut gesture and eye movement signals can excavate the bimodal interaction signal better,discriminate the complex interaction commands more quickly,and has stronger signal anti-interference capability based on its stronger feature information mining *** with the command interaction realized by using the single gesture modal signal and the single eye movement modal signal,the interaction model of bimodal collaboration is shorter about 79%to 91%of the time under the single mode *** of the influence of any image interference item,the overall judgment accuracy of the proposed model can be maintained a

关键词： human-robot interaction gesture and eye movement hybrid model YOLOv4 CBAM

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Corner Feature Extraction and Matching Method Constrained by Edge Region for lunar-based Equipment Optical Navigation

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Corner Feature Extraction and Matching Method Constrained by...

Theoretical analysis of the electric potential and the electrostatic dust transport around the Shackleton crater in the lunar south pole region

第43届中国控制会议

作者： Siqi Lu Rui Xu Wei Shao Shengying Zhu School of aerospace engineering Beijing Institute of Technology College of Automation and Electronic engineering Qingdao University of Science & Technology Shandong Key Laboratory of Autonomous Landing for Deep Space exploration

Aiming at the unstructured environment of the lunar surface,and the problems such as gray scale changes and texture features are not obvious,a method for extracting and matching optical navigation features of lunar-based equipment under edge region constraints is *** setting double thresholds,weak edge pixels are suppressed to screen out edge information,an edge information domain is constructed,and accelerated robust feature descriptors of edge images are extracted and *** search range of corner detection is reduced effectively and the concentration of feature detection is *** we use the estimator sample consistency algorithm to eliminate the wrong matching,and finally achieve accurate matching while preserving the feature points of the lunar surface image.

关键词： Edge region lunar-based equipment optical navigation Feature extraction and matching Feature screening

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Science China Earth Sciences 2023年第10期66卷 2278-2286页

作者： Chengxuan ZHAO Hong GAN Lianghai XIE Yi WANG Yongjun WANG Jingyan HONG Science and Technology on Vacuum Technology and Physics Laboratory Lanzhou Institute of PhysicsChina Academy of Space TechnologyLanzhou730000China Space Environment and Payload engineering center Lanzhou Institute of PhysicsChina Academy of Space TechnologyLanzhou730000China Deep Space exploration Laboratory Hefei230026China State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing100190China Joint Research and Development center of Chinese Science Academy and Shen County Liaocheng252400China School of Transportation Lanzhou Jiaotong UniversityLanzhou730000China

In recent years,the lunar south pole region(SPR)has become the focus of future explorations due to its special illumination condition and the possible water ice in permanently shadowed craters around *** Shackleton crater locates almost exactly at the Moon’s south pole and has become the hottest destination for several landing missions,including the Chang’E-7 ***,people still know little about the electric potential and the dust environment around this *** this paper,we develop an analytical model to study the surface potential and the electrostatic dust transport around the *** is found that the crater’s floor can be negatively charged due to the topographic shielding,and the surface potential is as low as-175 V on the leeward crater ***,a large number of charged dust grains can be emitted from the leeward crater wall,with a maximum height of about 10 km and a horizontal distance of about 40 km,which brings a local dust cloud around the *** the topographic shielding and the local dust cloud are qualitatively verified by a numerical simulation,in which a typical dust density of 10^(4)-10^(5)m^(-3)is found near the *** results are important to the environmental assessment for future explorations near the ***,the results are helpful to understand the surface charging and the electrostatic dust transport on the other airless bodies.

关键词： lunar south pole lunar crater Solar wind plasma lunar dust Surface charging

Real-time Monitoring of Inter-device Distance Based on Same-beam Interferometry

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Real-time Monitoring of Inter-device Distance Based on Same-...

The diurnal transport of atmospheric water vapor during major dust storms on Mars based on the Mars Climate Database,version 5.3

第九届中国卫星导航学术年会

作者： Yunpeng Gao Tianpeng Ren Lan Du Zejun Liu Sirui Chen Institute of Geospatial Information Information Engineering University Beijing aerospace Control center

In this paper,we propose a real-time monitoring of the separation between devices by using very long baseline interferometry(VLBI) technology,which is already mature in the mission of the lunar *** particular,during the separation process,using the same beam interference measurement(SBI) based on two downstream signals between the detectors,and the relative delay resolution to improve the relative distance *** on the principle of monitoring the relative distance between devices by using the same beam interference measurement,the real-time monitoring algorithm is given and the effects of orbit error,observation delay error and satellite attitude error on the monitoring are *** select a reasonable number of samples and confidence intervals to determine the separation *** analysis shows that considering the influence of 10 km satellite orbit error,10 ps observation delay error and 0.5 ° satellite attitude error,this method can realize the real-time monitoring of the separation between Chang’e 5’s equipment.

关键词： Same beam interference measurement(SBI) Chang’e 5 Relative distance

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Earth and Planetary Physics 2020年第6期4卷 550-564页

作者： Jing Li Zhao Peng Wu Tao Li Xi Zhang Jun Cui Planetary Environmental and Astrobiological Research Laboratory School of Atmospheric SciencesSun Yat-sen UniversityZhuhai Guangdong 519082China Chinese Academy of Sciences Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Department of Earth and Planetary Sciences University of California Santa CruzSanta CruzCalifornia 95064USA Chinese Academy of Sciences Key Laboratory of lunar and Deep Space exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012China Chinese Academy of Sciences center for Excellence in Comparative Planetology Hefei 230026China

In recent studies of the Martian atmosphere,strong diurnal variation in the dust was discovered in the southern hemisphere during major dust storms,which provides strong evidence that the commonly recognized meridional transport process is driven by thermal *** process,when coupled with deep convection,could be an important part of the short-term atmospheric dynamics of water ***,the potential of this process to alter the horizontal distribution of moist air has not been systematically *** this work,we conducted pre-research on the horizontal transport of water vapor associated with the migrating diurnal tide(DW1)at 50 Pa in the upper troposphere during major dust storms based on the Mars Climate Database(MCD)5.3,a state-of-the-art database for Martian atmospheric research that has been validated as simulating the relevant short-period atmospheric dynamics *** found westward-propagating diurnal patterns in the global water vapor front during nearly all the major dust storms from Martian years(MYs)24 to *** and correlation analyses showed that the diurnal transport of water vapor during global and A-season regional dust storms is dominated by the *** effect of the tidal transport of water vapor varies with the types of dust storms in different *** regional dust storms,the tidal transport induces only limited diurnal motion of the water ***,the horizontal tidal wind tends to increase the abundance of daytime water vapor at mid-to low latitudes during the MY 28 southern summer global dust storm while decreasing it during the MY 25 southern spring global dust *** tidal transport process during these two global dust storms can induce opposite effects on water escape.

关键词： Martian atmosphere thermal tides water vapor dust storms water escape

Overview of the lunar In Situ Resource Utilization Techniques for Future lunar Missions

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Space(Science & Technology) 2023年第1期3卷 293-310页

作者： Peng Zhang Wei Dai Ran Niu Guang Zhang Guanghui Liu Xin Liu Zheng Bo Zhi Wang Haibo Zheng Chengbao Liu Hanzhe Yang Yifan Bai Yang Zhang Dong Yan Kefa Zhou Ming Gao Technology and engineering center for Space Utilization Chinese Academy of SciencesBeijing 100094China

Along with the rapid development of space technology,extraterrestrial exploration has gradually tended to further-distanced and longer-termed planet *** the first step of an attempt for humans to build a perpetual planet base,building a lunar base by in situ resource utilization(ISRU)will drastically reduce the reliance of supplies from *** resources including mineral resources,water/ice resources,volatiles,and solar energy will contribute to the establishment of a lunar base for long-term life support and scientific exploration missions,although we must consider the challenges from high vacuum,low gravity,extreme temperature conditions,*** article provides a comprehensive review of the past developing processes of ISRU and the latest progress of several ISRU technologies,including in situ water access,in situ oxygen production,in situ construction and manufacture,in situ energy utilization,and in situ life support and plant cultivation on the *** being able to provide some material and energy supplies for lunar base construction and scientific exploration,the ISRU technologies need continuous validation and upgrade to satisfy the higher requirements from further lunar exploration ***,a 3-step development plan for lunar ISRU technologies in the next decade is proposed,which consists of providing technological solutions,conducting technical verification on payloads,and carrying out in situ experiments,with the ultimate aim of establishing a permanent lunar station and carrying out long-term lunar surface scientific *** overview of ISRU techniques and our suggestions will provide potential guidance for China’s future lunar exploration missions.

关键词： planet payload lunar

Development of a digital zenith telescope for advanced astrometry

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Science China(Physics,Mechanics & Astronomy) 2012年第4期55卷 723-732页

作者： HANADA Hideo ARAKI Hiroshi TAZAWA Seiichi TSURUTA Seiitsu NODA Hirotomo ASARI Kazuyoshi SASAKI Sho FUNAZAKI Ken'ichi SATOH Atsushi TANIGUCHI Hideo KIKUCHI Mamoru TAKAHASHI Tomoe YAMAZAKI Atsumu PING JinSong KAWANO Nobuyuki PETROVA Natalia GOUDA Naoteru YANO Taihei YAMADA Yoshiyuki NIWA Yoshito KONO Yusuke IWATA Takahiro National Astronomical Observatory of Japan Iwate-ken 0230861Japan Department of engineering Department Iwate UniversityIwate 0208550Japan National Astronomical Observatory Chinese Academy of SciencesBeijing 100012China Oshu Space&Astronomy Museum Iwate-ken 0230861Japan Department of Astronomy Kazan State UniversityKazan 420008Russia Section of Graduate School of Science Division of Physics and Astronomy Kyoto UniversityKyoto 6068501Japan Japan aerospace exploration Agency Kanagawa 2525210Japan

Like other optical astrometric techniques,the Photographic Zenith Tube(PZT) has played a key role in the past observations of the Earth rotation,and it also has a potential to be applied to several other observations by taking advantage of automatic observations with self compensation of tilt of the *** here propose In-situ lunar Orientation Measurement(ILOM) to study lunar rotational dynamics by direct observations of the lunar rotation from the lunar surface by using a small telescope like PZT with an accuracy of 1 milli-seconds of arc(1 mas) in the post-SELENE *** second application is to obtain local gravity field on the Earth by combining deflection of the vertical measured by PZT and the position measured by Global Positioning System(GPS) or Global Navigation Satellite System(GNSS).The accuracy required for this purpose is not as strict as *** have already developed a Bread Board Model(BBM) of the telescope for ILOM and made some experiments in order to know the performance of the driving mechanism under a similar condition to the lunar environment showing high vacuum,large temperature change and dusty *** have also shown that it is possible to correct the effects of uniform temperature change upon the optical system by using a simple model with an accuracy of better than 1 *** model has the potential to attain the accuracy of 1 mas,based on the results of the experiments and the simulations.

关键词： high accuracy orbit determination SAR LRS SELENE

Development of lunar regolith-based composite for in-situ 3D printing via high-pressure extrusion system

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Frontiers of Mechanical engineering 2023年第2期18卷 253-266页

作者： Hua ZHAO Jihong ZHU Shangqin YUAN Shaoying LI Weihong ZHANG State IJR center of aerospace Design and Additive Manufacturing School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design MIIT ChinaNorthwestern Polytechnical UniversityXi’an 710072China Unmanned System Research Institute Northwestern Polytechnical UniversityXi’an 710072China

To fully utilize the in-situ resources on the moon to facilitate the establishment of a lunar habitat is significant to realize the long-term residence of mankind on the moon and the deep space exploration in the ***,intensive research works have been conducted to develop types of 3D printing approach to adapt to the extreme environment and utilize the lunar regolith for in-situ ***,the in-situ 3D printing using raw lunar regolith consumes extremely high energy and *** this work,we proposed a cost-effective melting extrusion system for lunar regolith-based composite printing,and engineering thermoplastic powders are employed as a bonding agent for lunar regolith *** high-performance nylon and lunar regolith are uniformly pre-mixed in powder form with different weight *** high-pressure extrusion system is helpful to enhance the interface affinity of polymer binders with lunar regolith as well as maximize the loading ratio of in-situ resources of lunar *** properties such as tensile strength,elastic modulus,and Poisson’s ratio of the printed specimens were evaluated ***,the impact performance was emphasized to improve the resistance of the meteorite impact on the *** maximum tensile strength and impact toughness reach 36.2 MPa and 5.15 kJ/m2,*** melt extrusion for lunar regolith composite can increase the effective loading fraction up to 80 wt.% and relatively easily adapt to extreme conditions for in-situ manufacturing.

关键词： in-situ resource utilization melt extrusion molding lunar regolith-based composites mechanical properties additive manufacturing

Enhancing hydrogen evolution and oxidation kinetics through oxygen insertion into nickel lattice

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Journal of Energy Chemistry 2024年第8期95卷 529-539,I0012页

作者： Wanli Liang Xiyu Gong Jinchang Xu Zixuan Dan Fanyan Xie Hulei Yu Hao-Fan Wang Yanshuo Jin Hongjuan Wang Yonghai Cao Hui Meng Hao Yu School of Chemistry and Chemical engineering South China University of TechnologyGuangzhou 510641GuangdongChina Siyuan Laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsGuangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy MaterialsGuangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsDepartment of PhysicsJinan UniversityGuangzhou 510632GuangdongChina GBA Branch of aerospace Information Research Institute Chinese Academy of SciencesGuangzhou 510700GuangdongChina Instrumental Analysis&Research center Sun Yat-sen UniversityGuangzhou 510275GuangdongChina School of Materials Science and engineering South China University of TechnologyGuangzhou 510641GuangdongChina

Nickel-based materials,including metallic Ni and Ni oxide,have been widely studied in the exploration of non-precious-metal hydrogen electrocatalysts,but neither pure Ni nor NiO is ideal for the hydrogen evolution reaction(HER)and hydrogen oxidation reaction(HOR).In this paper,an oxygen insertion strategy was applied on nickel to regulate its hydrogen electrocatalytic performance,and the oxygen-inserted nickel catalyst was successfully obtained with the assistance of tungsten dioxide support(denoted as O-Ni/WO_(2)).The partial insertion of oxygen in Ni maintains the face-centered cubic arrangement of Ni atoms,simultaneously expanding the lattice and increasing the lattice ***,the adsorption strength of^(*)H and^(*)OH on Ni is optimized,thus resulting in superior electrocatalytic performance of0-Ni/WO_(2)in alkaline HER/*** Tafel slope of O-Ni/WO_(2)@NF for HER is 56 mV dec^(-1),and the kinetic current density of O-Ni/WO_(2)for HOR reaches 4.85 mA cm^(-2),which is ahead of most currently reported *** proposed strategy of inserting an appropriate amount of anions into the metal lattice could provide more possibilities for the design of high-performance catalysts.

关键词： Hydrogen evolution Hydrogen oxidation Nickel Oxygen insertion Adsorption free energy