Home

Notebook/Tablet PC

GETAC, Lake Forest, CA, has announced the V100 convertible PC featuring an LCD screen that instantly transforms from a notebook into a tablet PC. The portable V100 features ultra-quiet fanless design and includes a range of standard features, including a 10.4" screen, power-saving 1.2 GHz Intel® Core™ Duo Platform technology, 512 MB expandable to 2 GB of DRAM, 120 GB shock-mounted removable hard drive, integrated Bluetooth, reversible waterproof camera, and various wireless networking capabilities. The PC weights 4.9 pounds and is housed in a water-resistant magnesium alloy case with a hand strap. The package includes the Microsoft® Windows® XP Professional and XP Tablet PC Edition 2005 operating system.

The V100 features a 180-degree rotatable screen transformable from a notebook to a tablet PC, an optional 12.1" wide LCD screen, a shock-mounted removable hard drive, and a sunlight readable display. It is fully compliant with MIL-STD 810F and IP54 standards.

For Free Info Click Here

Posted in: Products
Read More >>

Mobile Communications Systems

NEC Unified Solutions, Irving, TX, has announced its Mobile Voice and Data Unit, a mobile communications system that enables secure communications during disaster recovery. The system provides wireless voice, data, and video communications to government agencies and first responders during emergency situations. The VoIP-based system provides quick deployment of remote Internet and voice capabilities through satellite access. The system uses the UNIVERGE® SV7000 MPS to support temporary or long-term voice and data networks, as well as WL1500 wireless access points, DTerm Phones, and wireless handsets.

The system is available in two preconfigured bundles for first responders and disaster recovery scenarios. The First Responder bundle is configured for more frequent and shorter-duration responses, while the other bundle is a standalone, self-sustaining system, configured for longer duration of events with increased access to desktop phones and a voicemail system. All bundles house the equipment in military-grade portable cases and include the satellite communications equipment and service.

For Free Info Click Here

Posted in: Products
Read More >>

Energy Storage for Hybrid Military Vehicles

The benefits of hybrid electric vehicles have been recognized by the U.S. Army and other military services. As a consequence, hybrid vehicles are being considered as future combat and tactical platforms. In order to achieve an All Electric Combat Vehicle (AECV), integration challenges have to be overcome for every system in the new vehicle.

Posted in: Articles, Aerospace
Read More >>

Update on NASA’s Unmanned Aerial Vehicle

In the August issue of Defense Tech Briefs, we highlighted NASA’s Altair/Predator B unmanned aerial vehicle (UAV) for Earth science missions. A lot has happened in the past two months, so we’re providing an update on the latest aircraft and applications in NASA’s growing UAV program.

Posted in: Articles, Aerospace
Read More >>

SpaceWire: The Standard for Aerospace Communications

Developed in 1999 under the auspices of the European Space Agency, SpaceWire answered a longstanding spaceflight problem: no standard, high-speed communications protocol existed for flight electronics. Therefore, all spaceflight electronic payloads (such as processing units and onboard computers) were customdesigned, which resulted in long development periods, high costs, and elevated risks. The SpaceWire standard was developed as a network of nodes and routers interconnected through bidirectional, high-speed serial links, limiting the customdesign problem by designing a standard with flexibility, modularity, and reusability.

Posted in: Articles, Aerospace
Read More >>

Error-Free Data Acquisition and Archival for High-Bandwidth Military Applications

Acquiring data from sensors, transporting the data, and then archiving it for future reference has changed dramatically over the last few years. The traditional approach of collecting data from an analog-to-digital converter (ADC) with a small microprocessor to monitor the slow-changing levels of a signal is for the most part no longer adequate. Today's new advanced military systems now employ complex sensors capable of generating streams of data with rates of 100 megabytes and greater. To transfer this high-speed data from the sensor to a processor without losing signal characteristics, designers now must digitize the data at the sensor. To meet this requirement, designers needed a protocol that would transport the digital data with minimum processing or latency. This problem was pursued by several companies, including Curtiss- Wright, and the result was the ANSI/VITA 17.1-2003 Serial Front Panel Data Port standard (S-FPDP).

Posted in: Briefs, Information Technology
Read More >>

The Dataflow Interchange Format for Designing DSPs

The dataflow interchange format (DIF) is a conceptual framework for helping designers of digital signal-processing (DSP) systems to integrate diverse dataflow models, dataflow techniques, DSP-design software tools, DSP software libraries, and embedded processing platforms. Somewhat more specifically, the DIF is intended to afford a unique combination of capabilities for (1) developing dataflow models and techniques for exploring the complex design spaces for embedded DSP systems; (2) porting DSP designs across various software tools, libraries, and embedded processing platforms; and (3) synthesizing software implementations from high-level, dataflow-based program specifications.

Posted in: Briefs, Information Technology
Read More >>

System for Imaging Turbulent Combustion Flows

The Components of the System enable diverse types of imaging, acquisition of image data, and processing of the data to extract information on multiple aspects of high-speed combustion flows.Asystem of scientific instrumentation and data-processing equipment has been assembled for research and education in turbulence, mixing, and chemical reactions (especially combustion) in high-speed laminar and turbulent flows. The system is designed to enable study of temporally varying, three- dimensional structures in flow regimes that have been inaccessible to prior instrumentation systems, with emphasis on flow regimes relevant to the operation of ramjet and scramjet engines.

Posted in: Briefs, Physical Sciences
Read More >>

Variable-Data-Rate Speech Encoder

Avariable-data-rate (VDR) speech encoder has been designed to be interoperable with, and eventually to supplant, the many different voice encoders now used in military communication systems. Because these older systems were designed to utilize specific radio links with fixed and limited channel capacities, these systems utilize many different voice compression algorithms operating at various fixed rates. The incompatibility of these systems is an obstacle to interoperability. Emerging net-centric communication systems promise to provide connectivity to all military users, but compatible encoding will be necessary for interoperability, and encryption will be necessary for secure communications.

Posted in: Briefs, Electronics & Computers
Read More >>

Apparatus Generates CE-Phase-Stable Two-Cycle Optical Pulses

A n apparatus that includes two optical parametric chirped pulse amplification stages has been built as a means of generating few-cycle, common-envelope (CE)-phase-stable, high-energy optical pulses. [CE phase is the phase of an optical carrier-signal waveform relative to the pulse envelope waveform. CE phase is an important property of fewcycle pulses, and CE-phase stability is essential in typical applications involving few-cycle pulses.] The apparatus can generate two-cycle (14-fs-duration) pulses at a nominal middle wavelength of 2 μm, and two-cycle (5-fs-duration) pulses at a nominal middle wavelength of 800 nm at a repetition rate of 1 kHz, without need for pulse compression by an external apparatus. The apparatus is intended for use in high-harmonic generation (HHG) of extreme ultraviolet (EUV) and soft x-rays in the near term, extending to production of attosecond EUV and soft-x-ray pulses in the longer term. Moreover, this apparatus is expected to enable exploration of generation of fewand single-cycle laser pulses over the wavelength range from 700 to 2.6 μm.

Posted in: Briefs, Photonics
Read More >>