Scalable Gaussian Process Regression

For multimodal data, this method gives higher prediction accuracy than a single approximate model.

Ames Research Center, Moffett Field, California

Block GP is a Gaussian Process regression framework for multimodal data that can be an order of magnitude more scalable than existing state-of-the-art nonlinear regression algorithms. The framework builds local Gaussian Processes on semantically meaningful partitions of the data and provides higher prediction accuracy than a single global model with very high confidence. The method relies on approximating the covariance matrix of the entire input space by smaller covariance matrices that can be modeled independently, and can therefore be parallelized for faster execution.

Posted in: Briefs, Electronics & Computers, Software, Analysis methodologies, Mathematical models
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MBSE-Driven Systems Engineering Visualization Suite

NASA’s Jet Propulsion Laboratory, Pasadena, California

There is a need to define the information architecture, ontologies, and patterns that drive the construction and architecture of Model-Based Systems Engineering (MBSE) models, but less clarity is given to the logical follow-on of that effort: how to practically leverage the resulting semantic richness of a wellformed populated model.

Posted in: Briefs, Electronics & Computers, Software, CAD / CAM / CAE, CAD, CAM, and CAE, Imaging, Imaging and visualization, Imaging, Imaging and visualization, Systems engineering
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Python Turbulence Detection Algorithm (PyTDA)

Marshall Space Flight Center, Alabama

This software, written in the Python programming language, estimates turbulence from Doppler radar data. It ingests radar data using the Department of Energy’s Py-ART open-source radar software toolkit.

Posted in: Briefs, Electronics & Computers, Software, Computer software / hardware, Computer software and hardware, Data acquisition and handling, Radar, Computer software / hardware, Computer software and hardware, Data acquisition and handling, Radar, Turbulence
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The Synergy of Engineering

At the Hannover Messe trade fair in Germany, Eplan Software & Service, with its affiliate company Cideon, introduced Syngineer, an innovative communication and information platform that integrates mechanical engineering, software engineering, and controls engineering through one mechatronic structure. Eplan, a sister company of Rittal Corporation in the Friedhelm Loh Group, offers Syngineer as a solution for simplifying synchronization across all three disciplines, accelerating design engineering and development.

Posted in: Articles, News, Communications, Electronics & Computers, Software
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Distributed, Fast, Intelligent Infrastructure Health Monitoring System

Improve operation and reduce maintenance costs with intelligent systems.

Stennis Space Center, Mississippi

NASA needed an innovative solution to conduct system assessments of frameworks and to characterize subsystems of interest. This tool would be required to determine anomalies; examine their causes (root-cause analysis); make predictive statements (prognostics); provide intelligent health monitoring with incremental knowledge for working with unknown scenarios; and provide maintenance support for a complex collection of systems, subsystems, and elements in rocket engine test platforms.

Posted in: Briefs, Electronics & Computers, Information Sciences, Diagnostics, Maintenance, Repair and Service Operations, Maintenance, repair, and service operations, Prognostics, Rocket engines
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Net Radiation and Evapotranspiration (Rn/ET) Download Product Tools and Interfaces

NASA’s Jet Propulsion Laboratory, Pasadena, California

This toolset automates downloads of global, multi-year Moderate Resolution Imaging Spectroradiometer (MODIS) and related data necessary for performing net radiation and evapotranspiration (Rn/ET) modeling, and provides an application programming interface (API) for simple and reliable access of these data from Python or MATLAB applications. Several useful utilities for validating and curating/indexing the downloaded data are also included.

Posted in: Briefs, Electronics & Computers, Computer software / hardware, Computer software and hardware, Data acquisition and handling, Spectroscopy, Computer software / hardware, Computer software and hardware, Data acquisition and handling, Spectroscopy, Radiation
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Software Tools for Fault Management Technologies

Marshall Space Flight Center, Alabama

Several key areas of improvement in effect design, development, verification, and validation of fault management processes have been identified in NASA’s Fault Management Handbook. The majority of these guidelines are focused on making the modeling tools more user friendly and reducing the modeling cost and time, as well as enhancing the analytic capabilities.

Posted in: Briefs, Electronics & Computers, Computer simulation, Failure analysis, Technical reference, Technical review
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Tool to Analyze a Leaking Source of Saturated Ammonia

Lyndon B. Johnson Space Center, Houston, Texas

Containers of ammonia are used to supply cooling to different modules of the International Space Station. Each container has an attachment piece used to extract the ammonia. The attachment piece may allow ammonia to exit when not connected, and may also allow ammonia to exit to an outside area even when connected. The ammonia that has exited the container may accumulate in different compartments of the spacecraft. The ammonia is not desirable when accumulated in a compartment with a certain concentration.

Posted in: Briefs, Electronics & Computers, Containers, Gases, Hazardous materials, Test equipment and instrumentation, Spacecraft
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Mixed-Integer Convex Programming Algorithm for Constrained Attitude Guidance

NASA’s Jet Propulsion Laboratory, Pasadena, California

A general problem in spaceflight since its beginning is attitude guidance: how to turn a spacecraft — also called a slew — so as to point science instruments at their targets. The slew must be done while avoiding pointing sensitive science instruments (e.g., a camera) and attitude sensors (e.g., a star tracker) at bright objects in the sky (e.g., the Sun or the Moon).

Posted in: Briefs, Information Sciences, Sensors and actuators, Spacecraft guidance, Sensors and actuators, Spacecraft guidance, Test equipment and instrumentation
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A Robust, Real-Time Collaboration Technology for Decision Support using Common Operating Picture (COP) Environments

This software provides remote geobrowser control for collaborative decision-making.

Stennis Space Center, Mississippi

StormCenter Communications, Inc. software takes advantage of cloud computing solutions to solve the growing need for real-time collaboration when accessing a Common Operating Picture (COP) from any device without having to give up all the vital tools and display functionality; all this is performed without disrupting current workflows. A COP is a platform shared by multiple stakeholders to provide a single, identical display of relevant operational information (i.e., mapping information, network operations and cyber security, sensors, weather, critical infrastructure) and tools to mark and manipulate the data. In the era of Big Data and the need for improved decision-making with the presence of multiple stakeholders across different disciplines, collaboration when using a COP is essential to success. This is especially important when dealing with decision-makers who are frequently non-data experts who need to take action immediately based on their situational awareness.

Posted in: Briefs, Electronics & Computers, Information Sciences, Big data, Cloud computing, Big data, Cloud computing, Collaboration and partnering
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