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  • 1
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    Monitoring of cell growth in vitro using biochips packaged with indium tin oxide sensors (2009)
    Elsevier
    Details
    Publication Date: 2009-05-01
    Print ISSN: 0925-4005
    Electronic ISSN: 1873-3077
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Published by Elsevier
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    PAPER CURRENT
  • 2
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    The surface energy of various biomaterials coated with adhesion molecules used in cell culture (2007)
    Elsevier
    Details
    Publication Date: 2007-03-01
    Print ISSN: 0927-7765
    Electronic ISSN: 1873-4367
    Topics: Biology , Chemistry and Pharmacology , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 3
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    High accuracy autonomous navigation using the global positioning system (GPS) (1997)
    In:  CASI
    Details
    Publication Date: 2004-12-03
    Description: The application of global positioning system (GPS) technology to the improvement of the accuracy and economy of spacecraft navigation, is reported. High-accuracy autonomous navigation algorithms are currently being qualified in conjunction with the GPS attitude determination flyer (GADFLY) experiment for the small satellite technology initiative Lewis spacecraft. Preflight performance assessments indicated that these algorithms are able to provide a real time total position accuracy of better than 10 m and a velocity accuracy of better than 0.01 m/s, with selective availability at typical levels. It is expected that the position accuracy will be increased to 2 m if corrections are provided by the GPS wide area augmentation system.
    Keywords: Aircraft Communications and Navigation
    Type: ; 73-78
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    The LANDSAT/global positioning system project (1988)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: A GPSPAC/LANDSAT-D Interface (GLI) Ground Support System was built to validate the performance and to calibrate the accuracy of the experimental navigation package, GPSPAC, flown on the LANDSAT-4 and 5 spacecraft. Although the GLI system operated successfully to give the orbit information needed to validate the GPSPAC, it also detected two anomalies: one is characteristic of the GLI system and the other is characteristic of the pre-operational phase of GPS. Several methods were applied to resolve or reduce the anomalies. This paper presents a description of the problems, the methods applied to resolve or reduce them, and the results.
    Keywords: AIRCRAFT COMMUNICATIONS AND NAVIGATION
    Type: Flight Mechanics(Estimation Theory Symposium 1988; p 186-208
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    EDOS Data Capture for ALOS (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: In 2008, NASA's Earth Sciences Missions Operations (ESMO) at Goddard Space Flight Center (GSFC) directed the Earth Observing System Data Operations System (EDOS) project to provide a prototype system to assess the feasibility of high rate data capture for the Japan Aerospace Exploration Agency's (JAXA) Advanced Land Observing Satellite (ALOS) spacecraft via NASA's Tracking and Data Relay Satellite System (TDRSS). The key objective of this collaborative effort between NASA and JAXA was to share science data collected over North and South America previously unavailable due to limitations in ALOS downlink capacity. EDOS provided a single system proof-of-concept in 4 months at White Sands TDRS Ground Terminal The system captured 6 ALOS events error-free at 277 Mbps and delivered the data to the Alaska Satellite Facility (ASF) within 3 hours (May/June '08). This paper describes the successful rapid prototyping approach which led to a successful demonstration and agreement between NASA and JAXA for operational support. The design of the operational system will be discussed with emphasis on concurrent high-rate data capture, Level-O processing, real-time display and high-rate delivery with stringent latency requirements. A similar solution was successfully deployed at Svalbard, Norway to support the Suomi NPP launch (October 2011) and capture all X-band data and provide a 30-day backup archive.
    Keywords: Computer Systems
    Type: GSFC.CP.00232.2012 , SpaceOps 2012; Jun 11, 2012 - Jun 15, 2012; Stockholm; Sweden
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Mission Operations Planning and Scheduling System (MOPSS) (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: MOPSS is a generic framework that can be configured on the fly to support a wide range of planning and scheduling applications. It is currently used to support seven missions at Goddard Space Flight Center (GSFC) in roles that include science planning, mission planning, and real-time control. Prior to MOPSS, each spacecraft project built its own planning and scheduling capability to plan satellite activities and communications and to create the commands to be uplinked to the spacecraft. This approach required creating a data repository for storing planning and scheduling information, building user interfaces to display data, generating needed scheduling algorithms, and implementing customized external interfaces. Complex scheduling problems that involved reacting to multiple variable situations were analyzed manually. Operators then used the results to add commands to the schedule. Each architecture was unique to specific satellite requirements. MOPSS is an expert system that automates mission operations and frees the flight operations team to concentrate on critical activities. It is easily reconfigured by the flight operations team as the mission evolves. The heart of the system is a custom object-oriented data layer mapped onto an Oracle relational database. The combination of these two technologies allows a user or system engineer to capture any type of scheduling or planning data in the system's generic data storage via a GUI.
    Keywords: Astronautics (General)
    Type: GSC-15858-1 , NASA Tech Briefs, September 2011; 47-48
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    EDOS Evolution to Support NASA Future Earth Sciences Missions (2010)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This paper presents a ground system architecture to service future NASA decadal missions and in particular, the high rate science data downlinks, by evolving EDOS current infrastructure and upgrading high rate network lines. The paper will also cover EDOS participation to date in formulation and operations concepts for the respective missions to understand the particular mission needs and derived requirements such as data volumes, downlink rates, data encoding, and data latencies. Future decadal requirements such as onboard data recorder management and file protocols drive the need to emulate these requirements within the ground system. The EDOS open system modular architecture is scalable to accommodate additional missions using the current sites antennas and future sites as well and meet the data security requirements and fulfill mission's objectives
    Keywords: Earth Resources and Remote Sensing
    Type: Space Operations 2010; Apr 26, 2010 - Apr 30, 2010; Huntsville, AL; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Coordinated Science Campaign Scheduling for Sensor Webs (2005)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Future Earth observing missions will study different aspects and interacting pieces of the Earth's eco-system. Scientists are designing increasingly complex, interdisciplinary campaigns to exploit the diverse capabilities of multiple Earth sensing assets. In addition, spacecraft platforms are being configured into clusters, trains, or other distributed organizations in order to improve either the quality or the coverage of observations. These simultaneous advances in the design of science campaigns and in the missions that will provide the sensing resources to support them offer new challenges in the coordination of data and operations that are not addressed by current practice. For example, the scheduling of scientific observations for satellites in low Earth orbit is currently conducted independently by each mission operations center. An absence of an information infrastructure to enable the scheduling of coordinated observations involving multiple sensors makes it difficult to execute campaigns involving multiple assets. This paper proposes a software architecture and describes a prototype system called DESOPS (Distributed Earth Science Observation Planning and Scheduling) that will address this deficiency.
    Keywords: Earth Resources and Remote Sensing
    Type: SAIRIS 2006; Sep 05, 2006 - Sep 09, 2006; Munich; Germany
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Use of Open Networks and Delay-Tolerant Protocol to Decrease WAN Latency of EOS near Real-Time Data (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Since 1999, NASA's Earth Observing System Data Operations System (EDOS) project at Goddard Space Flight Center (GSFC) has provided high-rate data capture, level zero processing, and product distribution services for a majority of NASA's EOS (Earth Observing System) high-rate missions, including Terra, Aqua, Aura, ICESat, EO-1, SMAP, and OCO-2. EDOS high-rate science and engineering (150-300 Mbps) data-driven capture systems are deployed at 7 worldwide ground stations which are connected via both private (closed) and public (open) wide area networks (WANs) to the centralized EDOS Level Zero Processing Facility (LZPF) located at GSFC, where the data is processed and Level 0 products are distributed to users worldwide. All data transferred over the open networks to GSFC traverse an IPSec tunnel, providing the same level of security as a VPN connection. EDOS produces both time-based and near real-time products (session-based). Near real-time data products are produced from a single ground station contact; time-based products are produced from multiple ground station contacts. EDOS is the primary supplier of EOS Level 0 data to the NASA near real-time user community known as the Land, Atmosphere Near real-time Capability for EOS (LANCE). For the past few years, EDOS has streamlined its systems to reduce WAN latency for near real-time data delivery, including implementing Quality of Service (QoS), expanding closed network bandwidth, adding open network connections with more bandwidth, and implementing a delay-tolerant protocol to mitigate long round-trip times to remote ground stations.
    Keywords: Ground Support Systems and Facilities (Space)
    Type: GSFC-E-DAA-TN55479 , International Conference on Space Operations (SpaceOps 2018); May 28, 2018 - Jun 01, 2018; Marseille; France
    Format: application/pdf
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  • 10
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    EDOS: 20 Years or Level 0 Processing for Terra (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-28
    Description: No abstract available
    Keywords: Ground Support Systems and Facilities (Space)
    Type: GSFC-E-DAA-TN76198 , AGU Fall Meeting; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
    Format: application/pdf
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