Special Coverage

Home

Small-Object Detection via Fast Discrete Curvelet Transform

NASA’s Jet Propulsion Laboratory, Pasadena, California The detection of distant objects in an image is relevant to applications in defense, security, and robotics. Successfully detecting objects of interest has been a common problem with respect to intelligent computer vision. Automatic target recognition (ATR) systems have been formulated and employed in numerous ways to tackle the difficulty of unsupervised targeting.

Posted in: Briefs, Electronics & Computers

Read More >>

Detecting an Extreme Minority Class in Hyperspectral Data Using Machine Learning

Automated classifiers can detect surface sulfur in orbital remote sensing observations. NASA’s Jet Propulsion Laboratory, Pasadena, California Orbital remote sensing provides a powerful way to efficiently survey targets for features of interest in inaccessible regions of the Earth as well as on other planets. One such feature of astrobiological relevance is the presence of surface sulfur deposits, which may be present on icy moons such as Europa. All hyperspectral instruments face the difficult task of spectral feature selection (finding the spectral bands that matter), especially those that operate in previously unstudied arenas encountered in planetary missions. This software demonstrates how manually annotated labels can enable automated feature discovery that boosts science return.

Posted in: Data Acquisition, Briefs, Electronics & Computers

Read More >>

KSC Spaceport Weather Data Archive

John F. Kennedy Space Center, Florida The Spaceport Weather Data Archive provides a fully searchable database of weather data gathered at Kennedy Space Center and the Cape Canaveral Air Force Station. Weather data includes wind, temperature, and humidity data from a surface meteorological tower network; upper air soundings from both weather balloons and radar wind profilers; and data from the extensive rain gauge network. Not only can the user easily retrieve data and download it, but the user can also view graphically the weather data on a map overlay. For example, the user can enter search criteria to view all lightning strikes ending at a particular date/time, and graphically see the lightning strikes color-coded based on elapsed time for the prior seven hours. A unique feature of the software is the capability to invoke an automated playback for cloud-to-ground lightning events on a geographic overlay for a selected date and time interval.

Posted in: Data Acquisition, Briefs, TSP, Electronics & Computers

Read More >>

Visualizing Acquisition, Processing, and Network Statistics Through Database Queries

NASA’s Jet Propulsion Laboratory, Pasadena, California Given a date range, the UAVSAR MySQL database is queried to evaluate data acquisition, processing status, and network performance, and uses the Google Charts API to dynamically return images of pie and bar charts to visualize processing and network statistics. The MySQL database is populated with relevant data that includes processing status, as well as network performance (ping and sample file downloads). Then, using the open Google Charts API, the metrics are displayed for any desired date range.

Posted in: Data Acquisition, Briefs, Electronics & Computers

Read More >>

Systems and Services for Near-Real-Time Web Access to NPP Data

Software for processing and interpreting S-NPP observations and related data has become publicly available and more readily usable. Marshall Space Flight Center, Alabama The recently launched Suomi National Polar-orbiting Partnership (SNPP) satellite, operated by NASA and the National Oceanic and Atmospheric Administration(NOAA), is providing multispectral global observations over the next several years to support a broad array of research and applications. SNPP data products consist of a complex set of data and metadata files in highly specialized formats, and the U.S. government’s operational ground segment delivers these to users with delays of several hours to a few days.

Posted in: Data Acquisition, Briefs, Electronics & Computers

Read More >>

“Ascent - Commemorating Shuttle” — A NASA Film and Multimedia Project DVD

The production has demonstrated itself not only to be a technical record, but to also serve as an inspirational, motivational, and educational tool. John H. Glenn Research Center, Cleveland, Ohio NASA seeks to preserve, and make readily accessible, historical Space Shuttle launch footage to inspire and educate NASA stakeholders both in and outside the NASA family through the dissemination of the Ascent production materials as a DVD, and through both NASA Television and online social media avenues without incurring distribution and media costs.

Posted in: Briefs, TSP, Electronics & Computers

Read More >>

High-Pressure, Reduced-Kinetics Mechanism for N-Hexadecane Oxidation

NASA’s Jet Propulsion Laboratory, Pasadena, California Combustion of realistic fuels is described by thousands of reactions involving thousands of species. Coupling these detailed chemical mechanisms with turbulence simulations is completely impractical because there is no computer powerful enough to solve the resulting equations.

Posted in: Briefs, Electronics & Computers

Read More >>