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Pass Plan Formatter (PPF) for Earth Sciences Ground Support System

Goddard Space Flight Center, Greenbelt, Maryland The TRMM (Tropical Rainfall Measuring Mission) and Terra ESMO (Earth Science Mission Operations) Ground Systems needed a method of passing scheduling data through the Goddard Mission Services Evolution Center (GMSEC) bus to other subsystems without modifying the Planning and Scheduling systems and their planning data output. The original output data is used by other subsystems and not just for automation with GMSEC.

Posted in: Briefs, TSP

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Integrated Tool Archives, Extracts, and Analyzes Spacecraft Housekeeping Telemetry Data (GMSEC R3.0)

Goddard Space Flight Center, Greenbelt, Maryland The Integrated Trending and Plotting System (ITPS) is a comprehensive tool for storage, extraction, analysis, and plots of spacecraft housekeeping telemetry data (GMSEC R3.0 — Goddard Mission Services Evolution Center). ITPS reports information to engineers, ground controllers, and scientists regarding status and health of spacecraft and instruments. This innovation was developed to support and advance GMSEC new technology in control center development that enables the interoperability of MOC (Mission Operations Center) software components via a middleware messaging system.

Posted in: Briefs, TSP

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Low-Noise Analog APDs with Impact Ionization Engineering and Negative Feedback

The technology can be used in active remote sensing optical instruments. Goddard Space Flight Center, Greenbelt, Maryland Silicon avalanche photodiodes (Si APDs) have low dark current and low excess noise factor, and are currently used in many of NASA’s missions. Noise equivalent power (NEP) of 40 to 50 fW/(Hz)1/2 over 140-MHz bandwidth has been demonstrated for Si APDs. Si APDs have very low responsivity for wavelengths longer than 1.1 mm, and cannot be used in future NASA lidar missions that require low noise and large-area photodetectors operated in the shortwave infrared (SWIR) region. The need for high-performance fiber optic communications receivers has provided the impetus for substantial progress during the last two decades in the understanding and performance of InP-based APDs that exhibit high responsivity in the wavelength range from 0.9 to 1.7 mm.

Posted in: Briefs, TSP

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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.

Posted in: Briefs, TSP

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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).

Posted in: Briefs, TSP, Electronics & Computers

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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.

Posted in: Briefs, TSP, Electronics & Computers

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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.

Posted in: Briefs, TSP, Electronics & Computers

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