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Briefs: Information Technology
An algorithm generates grid coordinates for a computationally efficient spiral search pattern covering an uncertain rectangular area spanned by a coordinate grid. The algorithm does not require...
Briefs: Information Technology
Algorithm-Based Fault Tolerance Integrated With Replication
In a proposed approach to programming and utilization of commercial off-the-shelf computing equipment, a combination of algorithm-based fault tolerance (ABFT) and replication would be utilized to obtain high degrees of fault tolerance without incurring excessive costs. The basic idea of...
Application Briefs: Photonics/Optics
As products become more featurerich, manufacturers are looking at ways to improve the human-computer interface (HCI). Touchscreens, with intuitive operation and software flexibility, and screen-printed...
Briefs: Information Technology
Targeting and Localization for Mars Rover Operations
A design and a partially developed application framework were presented for improving localization and targeting for surface spacecraft. The program has value for the Mars Science Laboratory mission, and has been delivered to support the Mars Exploration Rovers as part of the latest version of...
Briefs: Photonics/Optics
Phase matching of diverse electromagnetic modes (specifically, coexisting optical and microwave modes) in a whispering-gallery-mode (WGM) resonator has been predicted theoretically and verified...
Briefs: Information Technology
Terrain-Adaptive Navigation Architecture
A navigation system designed for a Mars rover has been designed to deal with rough terrain and/or potential slip when evaluating and executing paths. The system also can be used for any off-road, autonomous vehicles. The system uses more sophisticated terrain analysis, but also converges to computational...
Briefs: Electronics & Computers
Combined GMSK Communications and PN Ranging
A document discusses a method by which GMSK (Gaussian minimum shift keying) modulation and a pseudonoise (PN) ranging signal may be combined. By isolating the in-phase and quadrature components after carrier lock, and extracting their low-pass and band-pass filtered components, there is enough information...
Briefs: Photonics/Optics
Microwave-to-optical frequency converters based on whispering-gallery-mode (WGM) resonators have been proposed as mixers for the input ends of microwave receivers in which, downstream of the...
Briefs: Electronics & Computers
Network-Attached Solid-State Recorder Architecture
A document discusses placing memory modules on the high-speed serial interconnect, which is used by a spacecraft’s computer elements for inter-processor communications, to allow all multiple computer system architectures to access the spacecraft data storage at the same time. Each memory board is...
Briefs: Photonics/Optics
In wide-band microwave receivers of a type now undergoing development, the incoming microwave signals are electronically preamplified, then frequency-up-converted to optical signals that...
Briefs: Electronics & Computers
System-Level Integration of Mass Memory
A report discusses integrating multiple memory modules on the high-speed serial interconnect (IEEE 1393) that is used by a spacecraft’s inter-module communications in order to ease data congestion and provide for a scalable, strong, flexible system that can meet new system-level mass memory requirements.
Briefs: Photonics/Optics
Progress has been made toward solving some practical problems in the implementation of terahertz-to-optical frequency converters utilizing whispering-gallery-mode (WGM) resonators....
Briefs: Information Technology
An Efficient Reachability Analysis Algorithm
A document discusses a new algorithm for generating higher-order dependencies for diagnostic and sensor placement analysis when a system is described with a causal modeling framework. This innovation will be used in diagnostic and sensor optimization and analysis tools. Fault detection, diagnosis, and...
Briefs: Photonics/Optics
A proposed technique for measuring temperature would exploit differences between the temperature dependences of the frequencies of two different electromagnetic modes of a...
Briefs: Materials
Method of Cross-Linking Aerogels Using a One-Pot Reaction Scheme
A document discusses a new, simplified method for cross-linking silica and other oxide aerogels, with a polymeric material to increase strength of such materials without adversely affecting porosity or low density. The usual process is long and arduous, requiring multiple washing and...
Briefs: Photonics/Optics
A four-pass optical coupler affords increased (in comparison with related prior two-pass optical couplers) utilization of light generated by a laser diode in side pumping of a...
Articles: Software
In our annual poll of executives at leading analysis and simulation software companies, we posed questions dealing with virtual prototyping, multiphysics, the roles of the designer and analyst,...
Application Briefs: Sensors/Data Acquisition
Hall Effect position sensors Micropac Industries Garland, TX 972-272-3571 www.micropac.com
Micropac’s hermetic Hall Effect devices are being used by Alliance Spacesystems, LLC and Malin Space...
Application Briefs: Aerospace
Hi-Shear separation devices Hi-Shear Technology Corp. Torrance, CA 310-326-8110 www.hi-shear.com
Hi-Shear separation nuts and pressure cartridges recently were used on the Phoenix Mars...
Articles: Electronics & Computers
Breeching the security of safety- or security-intensive products such as auto parts, set top boxes, military electronics, or smart batteries can be a lucrative business that is well worth the nominal...
Articles: Electronics & Computers
Since the beginning of PC-based data acquisition and control in the 1980s, one question has remained a constant consideration for all who would specify a new DAQ system. Is this application better...
NASA Tech Needs
NASA is focused on building a human outpost on the lunar surface. To reach this goal, there is a critical need to develop energy storage technologies to power the future lunar...
Articles: Electronics & Computers
An ever-increasing reliance on software control has meant that many companies from non-aerospace business sectors (automotive, nuclear power, MRI scanners, financial...
Products: Software
Geotest - Marvin Test Systems, Irvine, CA, has introduced ATEasy 7.0, the latest version of its application development framework for functional test, automated test equipment (ATE), data acquisition, process control, and...
Application Briefs: Electronics & Computers
The design of enclosures to house networking servers and components should be guided by one overriding concern — heat. Servers, in particular, generate a great deal of heat, so an...
Products: Electronics & Computers
ACT/Technico (Warminster, PA) now offers the VME RAIDStor, a single-slot 6U network attached storage (NAS) blade that provides the same automatic, transparent data replication and re-sync of traditional box-level RAID storage...
Products: Electronics & Computers
Aimtec (Montreal, Canada) has introduced the 2 watt AM2GW-NZ series of ultra wide input (4:1) DC-DC switching power supplies with operating temperature range of -40°C to + 85°C. Versatile, single and...
Who's Who: Aerospace
Robert W. Moorehead served as NASA’s chief investigator for the Space Shuttle Challenger accident in 1986 and managed the Space Station Freedom program from...
Products: Electronics & Computers
Renesas Technology (San Jose, CA) has introduced the SH7262 and SH7264 series of high-performance SuperH® 32-bit microcontrollers (MCUs) with 1Mbyte of on-chip SRAM. The 144MHz devices are highly integrated and...
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Webcasts
Upcoming Webinars: Test & Measurement
From Spreadsheets to Insights: Fast Data Analysis Without Complex...
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Cooling a New Generation of Aerospace and Defense Embedded...
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Beyond AI-Copy-Paste Engineering: Advanced AI-Integration Success...
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Battery Abuse Testing: Pushing to Failure
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A FREE Two-Day Event Dedicated to Connected Mobility
Upcoming Webinars: Test & Measurement
Choosing the Right N-Port Strategy: Multiport VNAs vs. Switch...