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Briefs: Software
Computer Software Configuration Item-Specific Flight Software Image Transfer Script Generator
A K-shell UNIX script enables the International Space Station (ISS) Flight Control Team (FCT) operators in NASA’s Mission Control Center (MCC) in Houston to transfer an entire or partial computer software configuration item (CSCI) from a flight software...
Briefs: Materials
A systematic experimental study has been performed to determine the effects of each of the operating conditions in a double-pulse laser ablation process that is used to produce single-wall...
Briefs: Materials
Thermogravimetric Analysis of Single-Wall Carbon Nanotubes
An improved protocol for thermo-gravimetric analysis (TGA) of samples of single-wall carbon nanotube (SWCNT) material has been developed to increase the degree of consistency among results so that meaningful comparisons can be made among different samples. This improved TGA protocol is...
Briefs: Mechanical & Fluid Systems
The figure shows several aspects of an experimental robotic manipulator that includes a housing from which protrudes a tendril- or tentacle-like arm 1 cm thick and 1 m long. The arm consists of two...
Briefs: Mechanical & Fluid Systems
Foil Gas Thrust Bearings for High-Speed Turbomachinery
A methodology has been developed for the design and construction of simple foil thrust bearings intended for parametric performance testing and low marginal costs, supporting continued development of oil-free turbomachinery. A bearing backing plate is first machined and surface-ground to...
Briefs: Information Technology
Efficient Bit-to-Symbol Likelihood Mappings
This innovation is an efficient algorithm designed to perform bit-to-symbol and symbol-to-bit likelihood mappings that represent a significant portion of the complexity of an error-correction code decoder for high-order constellations. Recent implementation of the algorithm in hardware has yielded an...
Briefs: Information Technology
NASA’s planetary missions have collected, and continue to collect, massive volumes of orbital imagery. The volume is such that it is difficult to manually review all of the data...
Briefs: Information Technology
Some non-traditional signal constellations have been proposed for transmission of data over the Additive White Gaussian Noise (AWGN) channel using such channel-capacity-approaching codes as low-density...
Briefs: Photonics/Optics
Spurious interference limits the performance of many interferometric measurements. Digitally enhanced interferometry (DEI) improves measurement sensitivity by augmenting conventional heterodyne...
Briefs: Information Technology
Processing Images of Craters for Spacecraft Navigation
A crater-detection algorithm has been conceived to enable automation of what, heretofore, have been manual processes for utilizing images of craters on a celestial body as landmarks for navigating a spacecraft flying near or landing on that body. The images are acquired by an electronic camera...
Briefs: Green Design & Manufacturing
Luminescent materials were developed using aerosol processes, for making improved LED devices for solid-state lighting. In essence this means improving...
Briefs: Energy
Light Emitting Diode (LED) driver ICs associated with specific (uniquely operated) switching power supplies that optimize performance for High Brightness...
Briefs: Imaging
Wide-Field-of-View, High-Resolution, Stereoscopic Imager
A device combines video feeds from multiple cameras to provide wide-field-of-view, high-resolution, stereoscopic video to the user. The prototype under development consists of two camera assemblies, one for each eye. One of these assemblies incorporates a mounting structure with multiple...
Briefs: Information Technology
Algorithm for Lossless Compression of Calibrated Hyperspectral Imagery
A two-stage predictive method was developed for lossless compression of calibrated hyperspectral imagery. The first prediction stage uses a conventional linear predictor intended to exploit spatial and/or spectral dependencies in the data. The compressor tabulates counts of the...
Briefs: Physical Sciences
Polarization Imaging Apparatus
A polarization imaging apparatus has shown promise as a prototype of instruments for medical imaging with contrast greater than that achievable by use of non-polarized light. The underlying principles of design and operation are derived from observations that light interacts with tissue ultrastructures that affect...
Briefs: Lighting
SynDiTec Inc., San Jose, CA
This project developed new light emitting diode (LED) driver ICs associated with specific (uniquely operated) switching...
Briefs: Lighting
Cabot Corp., Boston, MA
The overarching goal of this project was to develop luminescent materials using aerosol processes for making improved LED devices...
Briefs: Lighting
Low-cost processing methods will be required if the small organic molecule materials currently under development for use in organic light emitting diodes (OLEDs) and other electronics are ever to realize wide spread...
Briefs: Information Technology
Software Tool Integrating Data Flow Diagrams and Petri Nets
Data Flow Diagram – Petri Net (DFPN) is a software tool for analyzing other software to be developed. The full name of this program reflects its design, which combines the benefit of data-flow diagrams (which are typically favored by software analysts) with the power and precision of...
Briefs: Physical Sciences
An adaptive-nulling method has been proposed to augment the nulling-optical-interferometry method of detection of Earth-like planets around distant stars. The method is intended to...
Briefs: Information Technology
Reducing the Volume of NASA Earth-Science Data
A computer program reduces data generated by NASA Earth-science missions into representative clusters characterized by centroids and membership information, thereby reducing the large volume of data to a level more amenable to analysis. The program effects an autonomous data-reduction/clustering...
Briefs: Electronics & Computers
Reception of Multiple Telemetry Signals via One Dish Antenna
A microwave aeronautical-telemetry receiver system includes an antenna comprising a seven-element planar array of receiving feed horns centered at the focal point of a paraboloidal dish reflector that is nominally aimed at a single aircraft or at multiple aircraft flying in formation....
Briefs: Electronics & Computers
The L-3 Communications Electron Technologies, Inc. Model 999HA traveling-wave tube (TWT), was developed for use as a high-power microwave amplifier for high-rate transmission of data and video signals from...
Briefs: Electronics & Computers
Smart Power Supply for Battery-Powered Systems
A power supply for battery-powered systems has been designed with an embedded controller that is capable of monitoring and maintaining batteries, charging hardware, while maintaining output power. The power supply is primarily designed for rovers and other remote science and engineering vehicles, but...
Briefs: Electronics & Computers
Parallel Processing of Broad-Band PPM Signals
A parallel-processing algorithm and a hardware architecture to implement the algorithm have been devised for timeslot synchronization in the reception of pulse-position-modulated (PPM) optical or radio signals. As in the cases of some prior algorithms and architectures for parallel, discrete-time,...
Briefs: Electronics & Computers
Inexpensive Implementation of Many Strain Gauges
It has been proposed to develop arrays of strain gauges as arrays of ordinary metal film resistors and associated electronic readout circuitry on printed-circuit boards or other suitable substrates. This proposal is a by-product of a development of instrumentation utilizing metal film resistors on...
Briefs: Software
Processing AIRS Scientific Data Through Level 3
The Atmospheric Infra-Red Sounder (AIRS) Science Processing System (SPS) is a collection of computer programs, known as product generation executives (PGEs). The AIRS SPS PGEs are used for processing measurements received from the AIRS suite of infrared and microwave instruments orbiting the Earth...
Briefs: Software
Web-Based Requesting and Scheduling Use of Facilities
Automated User’s Training Operations Facility Utilization Request (AutoFUR) is prototype software that administers a Web-based system for requesting and allocating facilities and equipment for astronaut-training classes in conjunction with scheduling the classes. AutoFUR also has potential for...
Briefs: Information Technology
AutoGen Version 5.0
Version 5.0 of the AutoGen software has been released. Previous versions, variously denoted “Autogen” and “autogen,” were reported in two articles: “Automated Sequence Generation Process and Software” (NPO-30746), Software Tech Briefs (Special Supplement to NASA Tech Briefs), September 2007, page 30, and “Autogen...
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