Tech Briefs

Method to Improve Wireless System Communication Coverage in a Bended Tunnel Environment

Lyndon B. Johnson Space Center, Houston, Texas The conventional methods of improving wireless system coverage performance are to increase the transmitter power and/or antenna gain. The high transmit power could lead to more power consumption and RF exposure issues. The use of a high-gain antenna could lead to a larger antenna size and increased weight and volume. An alternative approach would be to capture the available signal power more efficiently without increasing the transmitter power and/or increasing antenna size.

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Space Weather Database of Notifications, Knowledge, Information — DONKI

Goddard Space Flight Center, Greenbelt, Maryland SW DONKI is a comprehensive Web application for space weather forecasters, scientists, and the general space weather community. It serves as an archive for space weather activities including solar flares, coronal mass ejections (CMEs), solar energetic particles, and geomagnetic storms. An innovative feature of the system is the ability to generate, modify, and store complex linkages between space weather events — creating a comprehensive network of relationships between activities, and identifying potential cause-and-effect paradigms for each space weather event. SW DONKI also provides public access to all human-generated event analysis and notifications produced by the Space Weather Research Center (SWRC) forecasting team at CCMC (Community Coordinated Modeling Center).

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Core Flight System (cFS) Software Bus Network Application Version 1.0

Goddard Space Flight Center, Greenbelt, Maryland The Software Bus Network (SBN) is a plug-in component developed for the Core Flight System (cFS) framework that extends the core Flight Executive (cFE) Software Bus (SB) publish/subscribe messaging service across partitions, processes, processors, and networks. This extension is done transparently for cFS software components, such that cFS software components remain unchanged and are unaware of source or destination(s) location.

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STARS Finite Element Multidisciplinary Analysis Computer Program

Armstrong Flight Research Center, Edwards, California An efficient, cost-effective, and unique computer program has been developed that analyzes a variety of practical engineering problems. STructural Analysis Routines (STARS) is a fully integrated, multidisciplinary, finite element-based, graphic-oriented analysis tool that combines individual modules to solve complex engineering problems. The range of applications includes structural analysis, heat transfer, linear aerodynamics, and computational fluid dynamics (CFD), as well as coupled linear and CFD-based aeroelastic, aeroacoustics, aerothermoelastic-acoustics, and aeroservoelastic analysis. Because of the tool’s highly integrated nature, it has broad application across many engineering disciplines.

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Hazards Analysis Management Tool

Goddard Space Flight Center, Greenbelt, Maryland The Hazard Analysis Management Tool (HAMT) is comprised of a database and user interface that manages hazard analysis information, manages hazard verifications, and manages relationships between hazard attributes and project elements. The tool offers numerous benefits including the ability for multiple users to simultaneously update information, auto-generation of hazard reports, improved data consistency, ability to quickly obtain up-to-date status reports, and the ability to execute complex queries on the hazard information. This tool does not provide a mechanism for the identification of hazards. The tool requires minimal IT overhead and is easily tailored for specific projects and/or user groups. This tool was developed as a support capability, and testing was limited to the operational environment in which it was initially deployed.

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Developing Web and Mobile Applications Integrated with Systems Utilizing the Object Management Group’s Data Distribution Service

DDS-enabled applications range from human-computer interaction to data recording and retrieval. John F. Kennedy Space Center, Florida Several software application development tools exist that enable the rapid development of Web applications. Among other things, Web applications greatly enhance the human-computer interaction (HCI) required by many systems, while simplifying the problem of deploying applications to customers. Capitalizing on the new features provided by these tools could prove to be a boon to mission and project teams.

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Synthetic Imaging Maneuver Optimization — SIMO

Goddard Space Flight Center, Greenbelt, Maryland Space-based interferometry missions have the potential to revolutionize imaging and astrometry, providing observations of unprecedented accuracy. Realizing the full potential of these interferometers poses several significant technological challenges. These include the efficient maneuvering of multiple collectors to various baselines to make the requisite observations; regulating the path-length of science light from the collecting telescopes to the combining instrument with nanometer accuracy, despite the presence of vibration induced by internal and external disturbance sources; and demonstrating through hardware-in-the-loop simulation that the numerous spacecraft (SC) subsystems can be coordinated to perform such challenging observations in a precise, efficient, and robust manner.

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