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Aerospace Conference Proceedings, 2002. IEEE

Date 9-16 March 2002

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  • 2002 IEEE Aerospace Conference [front matter]

    Publication Year: 2002 , Page(s): i - xxii
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  • A multipropagator approach to real-time orbit simulation

    Publication Year: 2002 , Page(s): 7 - 3231 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1132 KB) |  | HTML iconHTML  

    Error control in numerical integration schemes typically focuses on selecting integration stepsizes according to how rapidly the integrand is changing over some interval of its domain. The validity of this approach rests on the assumption that the output error may be reduced to an arbitrarily small value by selecting an arbitrarily small time interval of integration. In the context of real-time si... View full abstract»

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  • EVA, robotic, and cooperative assembly of large space structures

    Publication Year: 2002 , Page(s): 7-3599 - 7-3610 vol.7
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2092 KB) |  | HTML iconHTML  

    This paper briefly summarizes two decades of Space Systems Laboratory experimental research on large space structure assembly. Based on high fidelity neutral buoyancy simulation with direct correlation to space flight data, this research encompasses extravehicular activity (EVA), teleoperation and robotics, and cooperative EVA/robotic assembly activities. Results presented from the extensive data ... View full abstract»

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  • Progressive automation in aerospace systems

    Publication Year: 2002 , Page(s): 7-3327 - 7-3331 vol.7
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (479 KB) |  | HTML iconHTML  

    Increasing automation in satellites and satellite control systems can lead to reduced operation costs and safer operation of the spacecraft. In a way, up-front development costs are being traded for long-term operation costs over the program life. With the increasingly parallel development of the spacecraft components and ground systems, the paper argues for an incremental approach to automation b... View full abstract»

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  • Dialogue-based human-robot interaction for space construction teams

    Publication Year: 2002 , Page(s): 7-3645 - 7-3653 vol.7
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (963 KB) |  | HTML iconHTML  

    This paper describes a human-robot interaction that uses dialogues as a basis for the operation of multiple robots in space construction. The dialogues, which are conducted by the operator and a community of software agents, consist of explicit and implicit queries and responses regarding the state of the robots and their environment. A dialogue enables a high-level but active role for the operato... View full abstract»

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  • Look, ma, no HANS! [High Accuracy Navigation Systems]

    Publication Year: 2002 , Page(s): 7-3169 - 7-3187 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1511 KB) |  | HTML iconHTML  

    As part of the low cost design, the spinning Genesis spacecraft has no High Accuracy Navigation Systems (HANS) on board, such as gyros or accelerometers. All science requirements are met, although accurate pointing estimation is limited to spin rates less than 2 rpm, due to star tracker characteristics, and less than 28° off Sun, because of the two-axis Sun sensor characteristics. Payload cont... View full abstract»

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  • Low cost ground systems - Fantasy or reality

    Publication Year: 2002 , Page(s): 7-3195 - 7-3200 vol.7
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (608 KB) |  | HTML iconHTML  

    During the concept phase and initial design of a NASA spacecraft, no NASA project says, 'I want an expensive ground system'. In fact, as with other parts of the total project, a zero cost option is the preferred choice. Our experience has shown that putting together a 'low cost' ground system including development systems, control center and ground station, is not as simple as one is first led to ... View full abstract»

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  • QoS tradeoffs for guidance, navigation, and control

    Publication Year: 2002 , Page(s): 7-3333 - 7-3341 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (659 KB) |  | HTML iconHTML  

    Future space missions will require onboard autonomy to reduce data, plan activities, and react appropriately to complex dynamic events. Software to support such behaviors is computationally-intensive but must execute with sufficient speed to accomplish mission goals. The limited processing resources onboard spacecraft must be split between the new software and required guidance, navigation, contro... View full abstract»

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  • Review of components for large spacecraft implementation

    Publication Year: 2002 , Page(s): 7-3665 - 7-3670 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1094 KB) |  | HTML iconHTML  

    The future of large spacecraft assembly, maintenance and servicing can benefit from the techniques and technologies of the past, present, and future. Not only can existing concepts and hardware be used to reduce implementation costs, but they can also point to deficiencies, which require further attention and development. This paper reviews relevant design trades, tasks and experience associated w... View full abstract»

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  • A method for estimating costs and benefits of space assembly and servicing by astronauts and robots

    Publication Year: 2002 , Page(s): 7-3655 - 7-3663 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (681 KB) |  | HTML iconHTML  

    One aspect of designing future space missions is to determine whether Space Assembly and Servicing (SAS) is useful and, if so, what combination of robots and astronauts provides the most effective means of accomplishing it. Certain aspects of these choices, such as the societal value of developing the means for humans to live in space, do not lend themselves to quantification. However, other SAS c... View full abstract»

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  • A systems management approach to improving performance and reducing risks in research projects and programs

    Publication Year: 2002 , Page(s): 7-3467 - 7-3471 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (421 KB) |  | HTML iconHTML  

    The Systems Management Office at the NASA Langley Research Center has adopted an approach to improving performance and reducing risks in research programs and projects that recognizes the interrelationship of good program or project management and systems engineering processes in achieving success. The approach stresses early identification, improvement, and implementation of good program or proje... View full abstract»

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  • Flight hardware delivery breakthroughs via engineering/business best-practices synthesis

    Publication Year: 2002 , Page(s): 7-3409 - 7-3428 vol.7
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2148 KB) |  | HTML iconHTML  

    Development and use of leading-edge engineering and business practices provides firm footing for tremendous advances in the aerospace community. When applied together and systemically across multiple missions, these practices can yield tremendous reduction of technical, schedule and cost risks for project development. An example of this synthesis can be found in the Jet Propulsion Laboratory's (JP... View full abstract»

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  • Managing unmanned flight projects using methods in complex product development

    Publication Year: 2002 , Page(s): 7-3473 - 7-3488 vol.7
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1152 KB) |  | HTML iconHTML  

    Recent developments in management science at the MIT Sloan School of Management provide a disciplined approach to managing complex product development. The methods are in wide use in industry both in the US and abroad. The principles involved in complex product development are very much applicable to managing unmanned planetary flight projects. Central to the methods involved is the decision struc... View full abstract»

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  • Optimizing the design of end-to-end spacecraft systems using risk as a currency

    Publication Year: 2002 , Page(s): 7-3361 - 7-3367 vol.7
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (640 KB) |  | HTML iconHTML  

    Treating risk as a "currency" has proven to be key in systematically optimizing the design of spacecraft systems. This idea has been applied in the design of individual components of spacecraft systems, and in the end-to-end design of such systems. The process, called "Defect Detection and Prevention" (DDP), its tool support, and applications, are described. The process can be summarized as determ... View full abstract»

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  • NASA's Commercial Space Centers: Bringing together government and industry for "out of this world" benefits

    Publication Year: 2002 , Page(s): 7-3673 - 7-3678 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (762 KB) |  | HTML iconHTML  

    The National Aeronautics and Space Administration (NASA) is making significant effort to accommodate commercial research in the utilization plans of the International Space Station (ISS). NASA is providing 30% of the research accommodations in the ISS laboratory modules to support commercial endeavors. However, the availability of resources alone does not necessarily translate into significant pri... View full abstract»

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  • Relating downlink products to uplink commands in Mars rover operations

    Publication Year: 2002 , Page(s): 7-3257 - 7-3264 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1425 KB) |  | HTML iconHTML  

    Downlink data products in Mars rover missions need to be associated with their uplink commanded target locations and the uplink commands that produced them. A system for automatically associating downlink data products with uplink commands and targets has been developed and used in a terrestrial rover field test. HTML reports viewable in a browser are automatically generated to relate downlink dat... View full abstract»

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  • Mars mission science operations facilities design

    Publication Year: 2002 , Page(s): 7-3245 - 7-3255 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1176 KB) |  | HTML iconHTML  

    A variety of designs for Mars rover and lander science operations centers are discussed in this paper, beginning with a brief description of the Pathfinder science operations facility and its strengths and limitations. Particular attention is then paid to lessons learned in the design and use of operations facilities for a series of mission-like field tests of the FIDO prototype Mars rover. These ... View full abstract»

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  • Dynamic risk assessment of CFD codes [aerospace design]

    Publication Year: 2002 , Page(s): 7-3369 - 7-3389 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (987 KB) |  | HTML iconHTML  

    The results of an innovative effort to dynamically extract risk measures that can be factored into the knowledge-base closed-loop control of flow calculations is presented. Example control decisions include changing flow-solving parameters or restarting from previous checkpoints to reduce the need for manual intervention. One significance of the work is a formal, rigorous, yet practical KB means t... View full abstract»

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  • Rapid spacecraft development: results and lessons learned

    Publication Year: 2002 , Page(s): 7-3429 - 7-3436 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (619 KB) |  | HTML iconHTML  

    The Rapid Spacecraft Development Office (RSDO) at NASA's Goddard Space Flight Center is responsible for the management and direction of a dynamic and versatile program for the definition, competition, and acquisition of multiple indefinite delivery and indefinite quantity contracts - resulting in a catalog of spacecraft buses. Five spacecraft delivery orders have been placed by the RSDO and two ha... View full abstract»

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  • Visualization of spectroscopy for remote surface operations

    Publication Year: 2002 , Page(s): 7-3265 - 7-3271 vol.7
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1443 KB)  

    This work discusses the role that in-situ spectroscopy plays in remote surface operations and how effective visualization of spectra can benefit planning. We begin by discussing how spectroscopy was used in the Mars Pathfinder mission and field trials with a prototype of the Mars Exploration Rover, paying close attention to shortcomings in visualization that hamper science planning. Next, we will ... View full abstract»

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  • Distributed mission operations with the Multi-mission Encrypted Communication System

    Publication Year: 2002 , Page(s): 7-3273 - 7-3279 vol.7
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (544 KB)  

    The traditional model of mission operations is centralized with all activities taking place at a single location. The Multi-mission Encrypted Communication System (MECS) is a tool for enabling distributed operations where scientists and engineers at several locations collaborate over the Internet to perform mission operations activities. There are many reasons why distributed operations are desira... View full abstract»

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  • Innovative quantum technologies for microgravity fundamental physics and biological research

    Publication Year: 2002 , Page(s): 7-3563 - 7-3566 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (389 KB) |  | HTML iconHTML  

    The many advanced technology requirements dictated by the demanding low-Earth orbit research environment can only be satisfied through the adaptation of innovative methods and technologies. The fundamental physics research program currently supports research in four areas: gravitational and relativistic physics, laser cooling and atomic physics, low temperature and condensed matter physics, and bi... View full abstract»

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  • Management alternatives for the International Space Station

    Publication Year: 2002 , Page(s): 7-3491 - 7-3501 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (726 KB) |  | HTML iconHTML  

    Work completed in 2001 concluded that increasing numbers of people in the International Space Station (ISS) stakeholder community now believe that the current management structure of the ISS has some serious drawbacks that need to be addressed. These diverse interests agree that if this large and complex facility is to be efficiently and effectively managed its management will need to be restructu... View full abstract»

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  • Training of a crater detection algorithm for Mars crater imagery

    Publication Year: 2002 , Page(s): 7-3201 - 7-3211 vol.7
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1613 KB) |  | HTML iconHTML  

    Automatic feature identification from orbital imagery would be of wide use in planetary science. For example, the ability to count craters on homogeneous surfaces would enable relative dating of geological processes. The scaling of crater densities and impact rates with crater size is another important issue which could be addressed by automated crater counting. Geological feature cataloging can p... View full abstract»

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  • A backroom mission operations center for TechSat 21

    Publication Year: 2002 , Page(s): 7-3189 - 7-3193 vol.7
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (462 KB)  

    The TechSat 21 satellite program is an Air Force Research Laboratory (AFRL) technology initiative which has an objective to demonstrate and validate microsatellite cluster system concepts and enabling technologies. The primary experimental objectives are to demonstrate formation flying algorithms and technologies for clustered satellites, and to demonstrate autonomous cluster and spacecraft operat... View full abstract»

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