Stories
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Briefs: Information Technology
Chance-Constrained Guidance With Non-Convex Constraints
Missions to small bodies, such as comets or asteroids, require autonomous guidance for descent to these small bodies. Such guidance is made challenging by uncertainty in the position and velocity of the spacecraft, as well as the uncertainty in the gravitational field around the small body. In...
News: Energy
Acoustics researchers at the University of Adelaide in Australia are developing a computer model to predict the noise output from wind farms so they can accurately and quickly assess the effectiveness of...
INSIDER Product: Electronics & Computers
The ZT8540 I/Q Digitizer from ZTEC Instruments (Albuquerque, NM) functions as a baseband Vector Signal Analyzer (VSA) from DC to 300 MHz. This new baseband VSA provides the signal fidelity and real-time processing capabilities...
INSIDER Product: Electronics & Computers
MathWorks (Natick, MA) has announced the availability of MATLAB Coder, which
enables design engineers to automatically generate readable, portable C and
C++ code directly from their MATLAB algorithms. This new product...
INSIDER Product: Electronics & Computers
Meggitt Sensing Systems (San Juan Capistrano, CA) has introduced the Endevco® model 133, a three-channel general purpose piezoelectric signal conditioner with a wide bandwidth of 100 KHz (-3 dB corner),...
INSIDER Product: Electronics & Computers
Allegro MicroSystems (Worcester, MA) has announced two new robust automotive grade buck regulators with high switching frequency and output current, each integrating a low resistance, high-side, N-channel MOSFET....
INSIDER Product: Electronics & Computers
Elan Digital System’s (Fareham, UK) USBHC869 USB interface chip now has a Demonstrator PCB including SDK driver code to help engineers simplify and speed up the development task of implementing the capability of the...
Supplements: Software
Comsol News - 2011
In the following user stories, nineteen diverse high-tech organizations showcase how their adoption of COMSOL Multiphysics has led to new product designs and research findings.
Table of Contents // COMSOL NEWS 2011
FEATURES
Multiphysics 4 Multiphysics Analysis of a Burning Candle 5 Capacitively Coupled Plasma Analysis ...
Briefs: Energy
A design of a highly efficient and lightweight space magnetic cooler has been developed at Goddard Space Flight Center that can continuously provide remote/distributed cooling at temperatures in the range of 2 K with a heat sink at about 15 K. The innovative design uses a cryogenic circulator that enables the cooler to operate at a high cycle frequency to achieve a large cooling capacity.
Briefs: Energy
Polymer nanofibers are nanoscale materials whose properties can be adjusted to provide desirable light management performance for high efficiency solid-state lighting...
News: Green Design & Manufacturing
An international team of scientists led by a team at Monash University of Melbourne, Australia has found that the key to the hydrogen economy could come from a very simple mineral -...
News: Energy
Advanced biofuels are highly touted as potential replacements for gasoline, diesel, and jet fuels. Equally touted is the synthesis of these fuels through the use of microbes. However, many...
Products: Lighting
Endicott Research Group, Inc. (ERG) (Endicott, NY) has updated its online LCD-LED Driver Cross- Reference Guide. The online guide has datasheets on over 200 drivers supporting more than 150 OEM panels. It...
Products: Lighting
At 6mm thick, the stacked flat type light guide panel from DynaScan Technology (Taipei, Taiwan) is an assembly of simple flat light guides, without any curvature or wedge angle, allowing over 90% light output...
Briefs: Electronics & Computers
On-Wafer S-Parameter Measurements in the 325-508-GHz Band
New circuits have been designed and fabricated with operating frequencies over 325 GHz. In order to measure S-parameters of these circuits, an extensive process of wafer dicing and packaging, and waveguide transition design, fabrication, and packaging would be required. This is a costly and...
Briefs: Electronics & Computers
Reconfigurable Microwave Phase Delay Element for Frequency Reference and Phase-Shifter Applications
A technique was developed to provide a reconfigurable high-precision microwave electrical phase delay for resonators and phase shifters. The invention employs multiple branches of transmission lines with open-ended or ground-ended terminations as...
Briefs: Electronics & Computers
High-Throughput, Adaptive FFT Architecture for FPGA-Based Spaceborne Data Processors
Exponential growth in microelectronics technology such as field-programmable gate arrays (FPGAs) has enabled high-performance spaceborne instruments with increasing onboard data processing capabilities. As a commonly used digital signal processing (DSP) building...
Briefs: Electronics & Computers
High-Speed Isolation Board for Flight Hardware Testing
There is a need to provide a portable and cost-effective galvanic isolation between ground support equipment and flight hardware such that any unforeseen voltage differential between ground and power supplies is eliminated. An interface board was designed for use between the ground support...
Briefs: Software
3D Orbit Visualization for Earth-Observing Missions
This software visualizes orbit paths for the Orbiting Carbon Observatory (OCO), but was designed to be general and applicable to any Earth-observing mission. The software uses the Google Earth user interface to provide a visual mechanism to explore spacecraft orbit paths, ground footprint...
Briefs: Software
MaROS: Web Visualization of Mars Orbiting and Landed Assets
Mars Relay operations currently involve several e-mails and phone calls between lander and orbiter teams in order to settle on an agreed time for performing a communication pass between the landed asset (i.e. rover or lander) and orbiter, then back to Earth. This new application aims to...
Briefs: Software
RAPID: Collaborative Commanding and Monitoring of Lunar Assets
RAPID (Robot Application Programming Interface Delegate) software utilizes highly robust technology to facilitate command-ing and monitoring of lunar assets. RAPID provides the ability for intercenter communication, since these assets are developed in multiple NASA centers.
Briefs: Software
Image Segmentation, Registration, Compression, and Matching
A novel computational framework was developed of a 2D affine invariant matching exploiting a parameter space. Named as affine invariant parameter space (AIPS), the technique can be applied to many image-processing and computer-vision problems, including image registration, template...
Briefs: Software
Image Calibration
Calibrate_Image calibrates images obtained from focal plane arrays so that the output image more accurately represents the observed scene. The function takes as input a degraded image along with a flat field image and a dark frame image produced by the focal plane array and outputs a corrected image. The three most prominent...
Briefs: Software
Rapid ISS Power Availability Simulator
The ISS (International Space Station) Power Resource Officers (PROs) needed a tool to automate the calculation of thousands of ISS power availability simulations used to generate power constraint matrices. Each matrix contains 864 cells, and each cell represents a single power simulation that must be run. The...
Briefs: Information Technology
Ascent Heating Thermal Analysis on Spacecraft Adaptor Fairings
When the Crew Exploration Vehicle (CEV) is launched, the spacecraft adaptor (SA) fairings that cover the CEV service module (SM) are exposed to aero heating. Thermal analysis is performed to compute the fairing temperatures and to investigate whether the temperatures are within the...
Briefs: Information Technology
Prioritized LT Codes
The original Luby Transform (LT) coding scheme is extended to account for data transmissions where some information symbols in a message block are more important than others. Prioritized LT codes provide unequal error protection (UEP) of data on an erasure channel by modifying the original LT encoder. The prioritized algorithm...
Briefs: Information Technology
Fast Image Texture Classification Using Decision Trees
Texture analysis would permit improved autonomous, onboard science data interpretation for adaptive navigation, sampling, and downlink decisions. These analyses would assist with terrain analysis and instrument placement in both macroscopic and microscopic image data products. Unfortunately,...
Briefs: Information Technology
More-Accurate Model of Flows in Rocket Injectors
An improved computational model for simulating flows in liquid-propellant injectors in rocket engines has been developed. Models like this one are needed for predicting fluxes of heat in, and performances of, the engines. An important part of predicting performance is predicting fluctuations of...
Briefs: Information Technology
Improved Systematic Pointing Error Model for the DSN Antennas
New pointing models have been developed for large reflector antennas whose construction is founded on elevation over azimuth mount. At JPL, the new models were applied to the Deep Space Network (DSN) 34-meter antenna’s subnet for corrections of their systematic pointing errors; it...
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INSIDER: Sensors/Data Acquisition
Webcasts
Upcoming Webinars: Automotive
Hydrogen Engines Are Heating Up for Heavy Duty
Upcoming Webinars: Transportation
Advantages of Smart Power Distribution Unit Design for Automotive...
Upcoming Webinars: Transportation
Quiet, Please: NVH Improvement Opportunities in the Early Design...
Upcoming Webinars: Sensors/Data Acquisition
From Spreadsheets to Insights: Fast Data Analysis Without Complex...
Upcoming Webinars: Test & Measurement
Battery Abuse Testing: Pushing to Failure
Upcoming Webinars: Transportation
