共查询到20条相似文献,搜索用时 109 毫秒
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当2010年的新年钟声敲响的时候,身在大凉山深处西昌卫星发射中心执行第三颗北斗导航卫星发射任务的火箭、卫星发射试验队也在翘首期盼着新年。但是,和常人的期盼不同,他们更期盼用自己辛勤的工作为新一年的航天发射任务迎来一个精彩的“开门红”。 相似文献
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《航天器工程》2021,30(3)
高分多模卫星工作模式复杂,工作模式组合变化多,卫星单轨和1天内可执行任务数量大幅增加。为了解决这些问题,在工程上实现卫星灵活、高效的工作过程精准执行,在操作上实现地面段任务管理的简洁、易用,在应用效能上实现卫星能力的充分发挥与卫星安全性的兼顾,参考国内外遥感卫星技术发展,提出"目标、需求、元任务、动作、指令"的5层次星地任务管理架构,明确了以"元任务"作为星地任务接口,并实现算法开发、地面验证和在轨应用。高分多模卫星星地任务管理方案大幅降低了地面任务管理人员对卫星操作的复杂程度,提高了任务上注效率、执行效率和组合使用灵活性,使得卫星的应用潜能得到完全发挥。 相似文献
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从总体与导航制导控制的视角,对长征三号甲系列运载火箭发展与成就进行了分析和小结。长征三号甲系列运载火箭,在长征三号运载火箭解决我国发射高轨道卫星有无问题的基础上,历经基本能力、适应能力、高适应能力的发展,具备了高轨道大型卫星运载能力,突破了从单一轨道面到三维空间各种轨道发射、从高轨卫星转移轨道到工作轨道发射、从地球轨道到地月轨道发射以及从航天技术试验到高可靠工程应用发射等关键技术,使我国运载火箭整体能力取得了地球全轨道发射、星际轨道发射等跨越发展。航天重大工程和国际商业发射表明,该系列运载火箭已进入世界高轨道航天器发射的运载火箭前列,并奠定了进一步开拓发展的基础。 相似文献
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Starting from their FIRES proposal [1]the DLR makes a new approach in the design of a small satellite mission dedicated to hot spot detection and evaluation: the BIRD mission. The new approach is characterized by a strict design-to-cost philosophy. A two-channel infrared sensor system in combination with a Wide-Angle Optoelectronic Stereo Scanner (WAOSS) shall be the payload of a small satellite (80kg) considered for piggyback launch. So the launch is not a main cost driver as for other small satellite missions with dedicated launchers. The paper describes the mission objectives, the scientific payload, the spacecraft bus, and the mission architecture of a small satellite mission dedicated to the investigation of hot spots (forest fires, volcanic activities, burning oil wells or coal seams), of vegetation condition and changes and of clouds. The paper represents some results of a phase A study and of the progressing phase B. 相似文献
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嫦娥二号卫星轨道设计 总被引:7,自引:3,他引:7
嫦娥二号卫星的轨道设计是在充分继承嫦娥一号轨道设计的理论和方法的基础上进行的,并在此基础上做了适应性改进。轨道设计的主要内容包括参数选择、发射窗口、速度增量需求以及嫦娥二号卫星和嫦娥一号卫星不同点的对比,提出了整个飞行轨道的设计思想。 相似文献
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Johannes Mathies Steffen Mauceri Lukas Pfeiffer Marco Vietze Hans-Peter Roeser Felix BoehringerMichael Lengowski 《Acta Astronautica》2014
SSETO is the result of a phase-A study in context of the small satellite program of the University of Stuttgart that demonstrates the capability of a university institute to build a small satellite with a budget of 5 million Euro. The satellite will be capable of observing exoplanets in a Neptune–Earth scale and obtaining data of interstellar dust. Due to a system failure of NASA?s Kepler mission, there is currently (October 2013) a lack of satellites searching for exoplanets. This paper details the design of subsystems and payload, as well as the required test tasks in accordance with the mission profile at a conceptional level. The costs for standard spacecraft testing and integration tasks are included, but not those of launch, ground support, operations and engineer working hours. 相似文献
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A. Nakajima
M. Abe
Y. Nishio
H. Yahagi
《Acta Astronautica》1991,25(12):765-773This paper describes the results of the in-orbit performance testing of deployable and retractable umbrella and boom systems, which will be used as important subsystems of Boomerang/Tether satellites. The umbrella is one of the possible candidates of the aerodynamic braking system for boomerang satellite and the boom is also one of the possible candidates of relative position adjusting mechanism between center of mass and aerodynamic force center of the boomerang satellite and initial release/final recovery mechanism of the tethered satellite. For this technology verification, a small and inexpensive satellite, named DEBUT (Deployable Boom and Umbrella Test satellite), was developed in a short period of 1.5 years elapsing from the start of the detailed design until the launch of the mission. The lithium dry cell batteries were used as the primary power and functioned normally during 10 days mission lifetime. 相似文献
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中国巴西地球资源卫星的轨道捕获和轨迹交会控制 总被引:2,自引:1,他引:2
中巴地球资源卫星一号(CBERS-1)是中国和巴西合作研制的第一颗运行在太阳同步轨道上的地球资源卫星.CBERS-1于1999年10月14日由中国自行研制的长征运载工具按预定计划准时发射,进入设计轨道,随后通过轨道捕获、星下点轨迹控制和多次轨道保持机动等一系列轨道测控操作,该卫星已按遥感用户的要求正常运行在高精度的太阳同步、回归冻结轨道上.本文简要阐明CBERS-1轨道控制系统的任务目标、系统结构、轨道控制策略、控制性能、飞行软件和在轨操作以及飞行结果. 相似文献
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《中国航天(英文版)》2019,(2)
The far side of the moon is a unique place for some scientific investigations. Chang'e 4 is a Chinese lunar far side landing exploration mission. Relay communication satellite, named as Queqiao, is an important and innovative part of Chang'e 4 mission. It can provide relay communication to the lander and the rover operating on the lunar far side to maintain their contacts with Earth. It was launched by LM-4 C launch vehicle at the Xichang Satellite Launch Center on May 21, 2018. After five precise orbit controls and a journey of more than 20 days, Queqiao inserted into final halo mission orbit around Earth-moon libration point 2, located about 65,000 km beyond the moon. It is the world's first communication satellite operating in that orbit. Up to now, Queqiao worked very well and provided reliable, continuous communication relay service for the lander and the rover to ensure the mission success of Chang'e 4 exploration mission. Via Queqiao, the lander and the rover were controlled to work by ground stations and obtained a great amount of scientific data. The mission overview, operation orbit selection, relay communication system design and flight profile were introduced in this article. 相似文献