Stories
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Products: Electronics & Computers
Kontron (Poway, CA) introduces the CP3210 rugged conduction-cooled 3U CompactPCI® CPU board. The CPU board offers a clock rate of 733 MHz and DDR SDRAM of 226 MHz. The CP3210 incorporates a...
Articles: Energy
In 1924, General Motors president Alfred P. Sloan Jr. devised annual model-year design changes in order to maintain unit sales. Body shapes faced cosmetic changes every year, whether or...
Briefs: Information Technology
An automated procedure has been developed to derive relevant factors, which can increase the ability to produce objective, repeatable methods for determining aerodynamic surface...
Briefs: Software
DSN Data Visualization Suite
The DSN Data Visualization Suite is a set of computer programs and reusable Application Programming Interfaces (APIs) that assist in the visualization and analysis of Deep Space Network (DSN) spacecraft-tracking data, which can include predicted and actual values of downlink frequencies, uplink frequencies, and...
Briefs: Electronics & Computers
In a proposed coding-and-modulation scheme, a high-rate binary data stream would be processed as follows:
Briefs: Electronics & Computers
A prototype decoder for a serially concatenated pulse position modulation (SCPPM) code has been implemented in a field-programmable gate array (FPGA). At the time of this reporting,...
Briefs: Electronics & Computers
The figure shows a biasable subharmonic mixer designed to operate in the frequency range from 520 to 600 GHz. This mixer is a prototype of low-power mixers needed for development of...
Briefs: Electronics & Computers
An effort to develop large-aperture, wide-angle-scanning reflectarray antennas for microwave radar and communication systems is underway. In an antenna of this type as envisioned,...
Briefs: Information Technology
Presentation Extensions of the SOAP
A set of extensions of the Satellite Orbit Analysis Program (SOAP) enables simultaneous and/or sequential presentation of information from multiple sources. SOAP is used in the aerospace community as a means of collaborative visualization and analysis of data on planned spacecraft missions. The following...
Application Briefs: Electronics & Computers
SGI® Altix® ICE systemSilicon Graphics, Inc. (SGI)Sunnyvale, CA800-800-7441www.sgi.com
SGI has supplied NASA's Advanced Supercomputing facility at NASA Ames Research Center in Mountain...
Application Briefs: Electronics & Computers
Radiation Detection Hardware Part of Living With a Star Experiment
Space dosimeter card Space Micro Inc. San Diego, CA 858-332-0700 www.spacemicro.com
Space Micro’s space dosimeter card has been successfully integrated at NASA Goddard Space Flight Center (Greenbelt, MD) into the Living with a Star (LWS), Space Environments Testbed (SET)...
Briefs: Software
Symbolic Processing Combined With Model-Based Reasoning
A computer program for the detection of present and prediction of future discrete states of a complex, real-time engineering system utilizes a combination of symbolic processing and numerical model-based reasoning. One of the biggest weaknesses of a purely symbolic approach is that it enables...
Briefs: Software
Spreadsheets for Analyzing and Optimizing Space Missions
XCALIBR (XML Capability Analysis LIBRary) is a set of Extensible Markup Language (XML) database and spreadsheet-based analysis software tools designed to assist in technology-return-on-investment analysis and optimization of technology portfolios pertaining to outer- space missions. XCALIBR...
Briefs: Materials
Lightweight composites of RP46 polyimide and glass fibers have been found to be useful as extraordinarily fire-resistant electrical-insulation materials. RP46 is a polyimide of the...
Briefs: Information Technology
Equations for computing tight bounds on error rates for coded pulse-position modulation (PPM) on a Poisson channel at high signal-to-noise ratio have been derived. These equations and...
Briefs: Information Technology
A multi-agent software/hardware architecture, inspired by the multicellular nature of living organisms, has been proposed as the basis of design of a robust, reliable, persistent...
Briefs: Information Technology
Using Covariance Analysis To Assess Pointing Performance
A Pointing Covariance Analysis Tool (PCAT) has been developed for evaluating the expected performance of the pointing control system for NASA’s Space Interferometry Mission (SIM). The SIM pointing control system is very complex, consisting of multiple feedback and feedforward loops, and...
Blog: Electronics & Computers
Terabit-Scale Processing
University of California at San Diego electrical and computer engineering professor Stojan Radic and his team have demonstrated the first real-time sampling of a 320 Gigabits per second (Gb/s) channel, in an effort to meet the Defense Advanced Research Projects Agency (DARPA) goal of developing
the first Terabit-scale...
Briefs: Software
Combinatorial Generation of Test Suites
Testgen is a computer program that generates suites of input and configuration vectors for testing other software or software/hardware systems. As systems become ever more complex, often, there is not enough time to test systems against all possible combinations of inputs and configurations, so test engineers...
Briefs: Semiconductors & ICs
Two single-stage InP heterojunction bipolar transistor (HBT) amplifiers operate at 184 and 255 GHz, using Northrop Grumman Corporation’s InP HBT MMIC (monolithic microwave integrated...
Briefs: Electronics & Computers
In-Phase Power-Combined Frequency Tripler at 300 GHz
This design starts with commercial 85- to 115-GHz sources that are amplified to as much as 250 mW using power amplifiers developed for the Herschel Space Observatory. The frequency is then tripled using a novel waveguide GaAs Schottky diode frequency tripler. This planar diode produces 26 mW at...
Briefs: Electronics & Computers
An improved design for the backshell of a connector for a shielded, multiple-wire cable reduces the size of the backshell, relative to traditional designs of backshells of otherwise...
Briefs: Electronics & Computers
The figure is a block diagram of a proposed system of portable illuminated signs, electronic monitoring equipment, and radio-communication equipment for preventing (or taking corrective...
Briefs: Electronics & Computers
The figure depicts salient features of the optical layout of a desktop-scale virtual-reality system that is specialized for simulating a glove-box work space. The system generates stereoscopic left-...
Briefs: Information Technology
Integrated System Health Management Development Toolkit
This software toolkit is designed to model complex systems for the implementation of embedded Integrated System Health Management (ISHM) capability, which focuses on determining the condition (health) of every element in a complex system (detect anomalies, diagnose causes, and predict future...
Briefs: Information Technology
TCP/IP Interface for the Satellite Orbit Analysis Program (SOAP)
The Transmission Control Protocol/Internet protocol (TCP/IP) interface for the Satellite Orbit Analysis Program (SOAP) provides the means for the software to establish real-time interfaces with other software. Such interfaces can operate between two programs, either on the same...
Briefs: Software
Autonomous Instrument Placement for Mars Exploration Rovers
Autonomous Instrument Placement (AutoPlace) is onboard software that enables a Mars Exploration Rover to act autonomously in using its manipulator to place scientific instruments on or near designated rock and soil targets. Prior to the development of AutoPlace, it was necessary for human...
Briefs: Software
Mission and Assets Database
Mission and Assets Database (MADB) Version 1.0 is an SQL database system with a Web user interface to centralize information. The database stores flight project support resource requirements, view periods, antenna information, schedule, and forecast results for use in mid-range and long-term planning of Deep Space...
Briefs: Software
Trajectory Calculator for Finite-Radius Cutter on a Lathe
A computer program calculates the two- dimensional trajectory (radial vs. axial position) of a finite-radius-of- curvature cutting tool on a lathe so as to cut a workpiece to a piecewise-continuous, analytically defined surface of revolution. (In the original intended application, the tool...
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