本文综述了极限性能哈勃太空望远镜(Hubble Space Telescope,HST)在轨微振动的研究进展,说明了其指向测量与控制系统组成和特点,同时给出了其关键技术指标,有针对性地剖析了HST在高性能航天器微振动研究及指向控制技术等方面的先进技术...本文综述了极限性能哈勃太空望远镜(Hubble Space Telescope,HST)在轨微振动的研究进展,说明了其指向测量与控制系统组成和特点,同时给出了其关键技术指标,有针对性地剖析了HST在高性能航天器微振动研究及指向控制技术等方面的先进技术和理念。阐述了HST反作用轮组件、太阳电池阵的扰动特点以及微振动引起光学元件抖动的现象,在此基础上,对现代航天器5种先进指向控制技术进行了总结,包括基于降阶模型的控制、基于线性二次高斯的控制、解析和数值推导的H∞控制、协方差控制和双模干扰调节控制。HST微振动相关技术分析方法可为我国高分专项、深空探测、载人航天、引力波探测等涉及到的高性能航天器、毫角秒级敏感器以及空间站光学舱等高精度光学仪器的研制、地面试验和在轨干扰环境量化评估提供有益的借鉴。展开更多
There are many blue shifted Galaxies in our universe. Here we will see old simulations to make such predictions from the output graphs using SITA simulations. There are four new simulations also presented here. In the...There are many blue shifted Galaxies in our universe. Here we will see old simulations to make such predictions from the output graphs using SITA simulations. There are four new simulations also presented here. In these sets of simulations, different point masses are placed in different distances in a 3D Cartesian coordinate grid;and these point masses are allowed to move on universal gravitation force (UGF) acting on each mass at that instant of time at its position. The output pictures depict the three dimensional orbit formations of point masses after some iterations. In an orbit so formed, some Galaxies are coming near (Blue shifted) and some are going away (Red shifted). In this paper, the simulations predicted the existence of a large number of Blue shifted Galaxies, in an expanding universe, in 2004 itself. Over 8300 blue shifted galaxies have been discovered extending beyond the Local Group by Hubble Space Telescope (HST) in the year 2009. Thus Dynamic Universe model predictions came true.展开更多
In this paper we will see the model of Universe according to Dynamic Universe Model of Cosmology by visualizing various processes that are happening in the Universe as per experimental evidences. For simplifying the m...In this paper we will see the model of Universe according to Dynamic Universe Model of Cosmology by visualizing various processes that are happening in the Universe as per experimental evidences. For simplifying the matter here, we will see in part 1: about the Galaxy life cycle, where the birth and death of Galaxies discussed. Probably Universe gives guidance for the movement of Galaxies. We call this Part 1: Thinking and Reproducing Universe or Mindless Universe? (Galaxy life cycle). We see every day Sun, Stars, Galaxies etc., dissipating enormous energy in the form of radiation by the way of fusion of Hydrogen to helium. So after sometime all the Hydrogen is spent and Universe will die, is it not? … Dynamic Universe Model says that the energy in the form of electromagnetic radiation passing grazingly near any gravitating mass changes in frequency and finally will convert into neutrinos (mass). Hence Dynamic Universe Model proposes another process where energy will be converted back into matter and the cycle energy to mass to energy continues, sustaining the Universe to maintain this present status for ever in this form something like a Steady state model without any expansion. This we will see in Part 2: Energy - Mass - Energy Cycle. After converting energy into mass “how various elements are formed and where they are formed?” will be next logical question. Dynamic Universe Model says that these various particles change into higher massive particles or may get bombarded into stars or planets and various elements are formed. Here we bifurcate the formation of elements into 6 processes. They are for Elementary particles and elements generated in frequency changing process, By Cosmic rays, By Small stars, By Large Stars, By Super Novae and Manmade elements By Neutron Stars. This we will discuss in Part 3: Nucleosynthesis.展开更多
本文运用文献计量学方法,以SAO/NASA天文数据系统(Smithsonian Astrophysical Observatory/National Aeronautics and Space Administration Astrophysics Data System,SAO/NASA ADS)为信息源,通过对1991年至2010年5月间8913篇利用哈勃...本文运用文献计量学方法,以SAO/NASA天文数据系统(Smithsonian Astrophysical Observatory/National Aeronautics and Space Administration Astrophysics Data System,SAO/NASA ADS)为信息源,通过对1991年至2010年5月间8913篇利用哈勃太空望远镜(Hubble Space Telescope,HST)产生的论文的发表时间、期刊分布、作者、被引频次和科学仪器的使用情况进行了统计分析,揭示了基于哈勃太空望远镜获取的数据展开的科学研究的时间特性和规模,评述了其科研支撑的作用。展开更多
文摘本文综述了极限性能哈勃太空望远镜(Hubble Space Telescope,HST)在轨微振动的研究进展,说明了其指向测量与控制系统组成和特点,同时给出了其关键技术指标,有针对性地剖析了HST在高性能航天器微振动研究及指向控制技术等方面的先进技术和理念。阐述了HST反作用轮组件、太阳电池阵的扰动特点以及微振动引起光学元件抖动的现象,在此基础上,对现代航天器5种先进指向控制技术进行了总结,包括基于降阶模型的控制、基于线性二次高斯的控制、解析和数值推导的H∞控制、协方差控制和双模干扰调节控制。HST微振动相关技术分析方法可为我国高分专项、深空探测、载人航天、引力波探测等涉及到的高性能航天器、毫角秒级敏感器以及空间站光学舱等高精度光学仪器的研制、地面试验和在轨干扰环境量化评估提供有益的借鉴。
文摘There are many blue shifted Galaxies in our universe. Here we will see old simulations to make such predictions from the output graphs using SITA simulations. There are four new simulations also presented here. In these sets of simulations, different point masses are placed in different distances in a 3D Cartesian coordinate grid;and these point masses are allowed to move on universal gravitation force (UGF) acting on each mass at that instant of time at its position. The output pictures depict the three dimensional orbit formations of point masses after some iterations. In an orbit so formed, some Galaxies are coming near (Blue shifted) and some are going away (Red shifted). In this paper, the simulations predicted the existence of a large number of Blue shifted Galaxies, in an expanding universe, in 2004 itself. Over 8300 blue shifted galaxies have been discovered extending beyond the Local Group by Hubble Space Telescope (HST) in the year 2009. Thus Dynamic Universe model predictions came true.
文摘In this paper we will see the model of Universe according to Dynamic Universe Model of Cosmology by visualizing various processes that are happening in the Universe as per experimental evidences. For simplifying the matter here, we will see in part 1: about the Galaxy life cycle, where the birth and death of Galaxies discussed. Probably Universe gives guidance for the movement of Galaxies. We call this Part 1: Thinking and Reproducing Universe or Mindless Universe? (Galaxy life cycle). We see every day Sun, Stars, Galaxies etc., dissipating enormous energy in the form of radiation by the way of fusion of Hydrogen to helium. So after sometime all the Hydrogen is spent and Universe will die, is it not? … Dynamic Universe Model says that the energy in the form of electromagnetic radiation passing grazingly near any gravitating mass changes in frequency and finally will convert into neutrinos (mass). Hence Dynamic Universe Model proposes another process where energy will be converted back into matter and the cycle energy to mass to energy continues, sustaining the Universe to maintain this present status for ever in this form something like a Steady state model without any expansion. This we will see in Part 2: Energy - Mass - Energy Cycle. After converting energy into mass “how various elements are formed and where they are formed?” will be next logical question. Dynamic Universe Model says that these various particles change into higher massive particles or may get bombarded into stars or planets and various elements are formed. Here we bifurcate the formation of elements into 6 processes. They are for Elementary particles and elements generated in frequency changing process, By Cosmic rays, By Small stars, By Large Stars, By Super Novae and Manmade elements By Neutron Stars. This we will discuss in Part 3: Nucleosynthesis.
文摘本文运用文献计量学方法,以SAO/NASA天文数据系统(Smithsonian Astrophysical Observatory/National Aeronautics and Space Administration Astrophysics Data System,SAO/NASA ADS)为信息源,通过对1991年至2010年5月间8913篇利用哈勃太空望远镜(Hubble Space Telescope,HST)产生的论文的发表时间、期刊分布、作者、被引频次和科学仪器的使用情况进行了统计分析,揭示了基于哈勃太空望远镜获取的数据展开的科学研究的时间特性和规模,评述了其科研支撑的作用。
