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利用天体特征和恒星自主跟踪技术(AFAST)创建自主航天器
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作者 SurapholUdomkesmalee GuyK.Man +1 位作者 BarbaraA.Wilson 潘科炎 《控制工程(北京)》 2003年第3期23-33,共11页
本文介绍建造自主航天器所必须的AFAST技术,这是探测太阳系天体的自主航天器所需掌握的一项关键技术。文中针对几种可能的飞行任务方案提出了构成AFAST系统的结构体系和信息处理要求。重点介绍天体特征的识别技术,这种识别技术对AFAST... 本文介绍建造自主航天器所必须的AFAST技术,这是探测太阳系天体的自主航天器所需掌握的一项关键技术。文中针对几种可能的飞行任务方案提出了构成AFAST系统的结构体系和信息处理要求。重点介绍天体特征的识别技术,这种识别技术对AFAST的重大意义,以及AFAST的当前技术状态。 展开更多
关键词 自主航天器 天体特征 恒星 自主跟踪技术 AFAST系统
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The Analysis of the Characteristics of the Dishpan Experiment and the Revolving Motion of Atmosphere 被引量:1
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作者 陈刚毅 谢莉辉 《Applied Geophysics》 SCIE CSCD 2005年第4期254-258,共5页
In this paper we summarize the characteristics of the dishpan experiment, the principle of substance revolving, and the scientific basis of the “retrograde wave in only one direction” with respect to weather data an... In this paper we summarize the characteristics of the dishpan experiment, the principle of substance revolving, and the scientific basis of the “retrograde wave in only one direction” with respect to weather data and S. C. OuYang's articles in which the fundamental questions in the meteorological theory were pointed out. Furthermore, we discuss the systematic changes involving the concept, theory, and method that substance evolves. 展开更多
关键词 Retrograde wave in only one direction Dishpan experiment Eddy current Evolves.
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Geochemical Features of the Hubin Spring Gases from the Northern Caldera Lake of the Tianchi Volcano,Changbai Mountains
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作者 Gao Ling Shangguan Zhiguan +1 位作者 Wei Haiquan Zhao Ciping 《Earthquake Research in China》 2011年第3期370-377,共8页
This paper deals with geochemical features of gas emitted from the Hubin Springs. The Hubin Springs zone, a strong thermal emission zone, is are locatedd at the north edge of the Tianchi caldera lake. Very young depos... This paper deals with geochemical features of gas emitted from the Hubin Springs. The Hubin Springs zone, a strong thermal emission zone, is are locatedd at the north edge of the Tianchi caldera lake. Very young deposits with uncertain eruption date are found on the top area of the Tianwenfeng, which might have been formed in one of the recent eruptions or the Millennium Eruption. It is of significance to study the geochemistry features of the emitting gas from the Hubin Springs to understand the activities of the Tianchi Volcano. This paper systematically sampled and analyzed the gases emitted from the Hubin Springs and discussed their geochemistry features. The results show that there is a high content of deep derived gases, such as CO2, He, CH4 and Ar in Hubin Springs zone. The isotopic ratio of He lies between 4. 18 and 5. 95 Ra. The averaged mantle derived gas content calculated from the ^4He/2^20Ne ratio and He content reaches 67.1%. All these show that the Hubin Springs are located on a special belt of deep gases released in high intensity and large scale. The spatial distribution of Helium isotope is characterized by concavity, showing that this special area may be related to the volcanic edifice. It is highly possible that the released gases represent the residual gas samples of the latest eruptions from the Tianchi Volcano. However more detailed studies are demanded. 展开更多
关键词 Tianchi Volcano Hubin strong gas-release zone Gas geochemistry CRATER Residual gas
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