Keyword: Wireless communication systems

Briefs: Information Technology

NASA needed an innovative solution to conduct system assessments of frameworks and to characterize subsystems of interest. This tool would be required to determine...

Articles: Sensors/Data Acquisition

The romantic notion of grizzled ranchers out riding the range on horseback to shepherd their herd of cattle may soon be a distant memory, as cloud-based sensor technology now permits real-time...

Application Briefs: Sensors/Data Acquisition

As more connected devices enter the market and see wider adoption by an ever increasing number of industries, the Internet of Things (IoT) is rapidly expanding.

Briefs: Communications
Communication System and Method Over High-Latency, Low-Bandwidth Networks

In high-latency, low-bandwidth networks such as those employed when communicating with an extraterrestrial object via wireless communication over hundreds or thousands of miles, it may be difficult or expensive to communicate large quantities of information in a reliable...

Briefs: Data Acquisition
SMAP Radiometer Instrument Science Signal and Data Processing Software (SPS)

This technology was developed for the Soil Moisture Active Passive (SMAP) mission and for the IRAD-FY13 Technology for Radiometer RFI Noise Detection & Mitigation Based on HHT2. Spacecraft beyond the present state-of-the-art passive radiometry will make use of...

Articles: Photonics/Optics

More than three million Americans are currently living with glaucoma, an eye disorder with few symptoms in its early stages. Globally, the number may increase to almost 80 million by 2020, according...

Briefs: RF & Microwave Electronics

E-textiles have shown great promise within the microwave and antenna community to provide a low-mass, highly conformal option that integrates extremely well with fabric-based microwave devices and antenna platforms,...

Briefs: Sensors/Data Acquisition

To enable the human mobility necessary to effectively explore near-Earth asteroids and deep space effectively, a new extravehicular activity (EVA) jetpack is under development. The...

Briefs: Information Technology
Non-Binary Protograph-Based LDPC Codes with Near-Capacity Thresholds

Binary protograph codes are state-of-the-art codes over the binary field Galois Field GF(2). These codes were invented by JPL in 2003 and proposed to CCSDS (Consultative Committee for Space Data Systems) recently as a channel-coding standard for space communications. It is...

Briefs: Communications
Protograph-Based LDPC Bit-Interleaved Coded Modulation

Bandwidth and power-coded modulation schemes are very desirable for many applications in high-data-rate transmission over a given allocated bandwidth. The goal is to design such coded modulation system for a given throughput with the lowest possible signal-to-noise ratio for not only a...

Articles: Energy

Specifying the ideal power management solution for remote wireless devices found in extreme environments and hard-to-access locations requires more ruggedized solutions. Fortunately, two viable options are now...

Research News: Lighting

University of California, San Diego electrical engineering professor Zhaowei Liu and colleagues have taken the first steps in a project to develop fast-blinking LED systems for...

Articles: Automotive

The global automotive industry faces incredible pressures today. The skyrocketing costs of traditional fuels — along with worldwide supply uncertainties — are forcing automakers to not only increase the...

Articles: Electronics & Computers
iPecs Pro Clinical Prosthetic Alignment and Assessment Tool Michael Leydet, Richard Harrington, Alan Hutchenreuther, Vinay Bharadwaj,
Chuck Krapf, Michael Link, Megan Toscas,...
Briefs: Physical Sciences

In popular perception, the vastness of space is an empty vacuum dotted with stars, planets, black holes, and other celestial formations. In reality, astrophysicists have shown...

Articles: Lighting

Energy can be found everywhere — in the movement of doors and windows or machine components, the vibration of motors, changing temperature or variances in luminance level. These energy...

Briefs: Software
Remote Viewer for Maritime Robotics Software

This software is a viewer program for maritime robotics software that provides a 3D visualization of the boat pose, its position history, ENC (Electrical Nautical Chart) information, camera images, map overlay, and detected tracks.

Articles: Electronics & Computers

With more than a year under its belt since it was officially ratified by PICMG in March of 2011, CompactPCI Serial (PICMG CPCI-S.0) has proven to be a good example of how an industry...

Techs for License: Lighting

Matrix-addressed displays, which include LCDs, LEDs, and almost every kind of display except the CRT, are currently refreshed one row or one column at a time. This is required for...

Briefs: Physical Sciences
Nanostructure Sensing and Transmission of Gas Data

This system provides one or more sensors for selected chemicals (all using nanostructure sensors with small physical sizes), one or more sensors for physical parameters (e.g. voltage or current), a multiplexer to receive and interleave the measured data stream values from the sensors according...

Briefs: Physical Sciences
Software-Defined Radio for Space-to-Space Communications

A paper describes the Space-to-Space Communications System (SSCS) Software-Defined Radio (SDR) research project to determine the most appropriate method for creating flexible and reconfigurable radios to implement wireless communications channels for space vehicles so that fewer radios are...

Articles: Sensors/Data Acquisition

Over the past ten years, the worldwide sensors technology market has experienced tremendous growth. Today’s sensor technology has been woven seamlessly into our everyday lives...

Briefs: Physical Sciences
Attitude Estimation in Fractionated Spacecraft Cluster Systems

An attitude estimation was examined in fractioned free-flying spacecraft. Instead of a single, monolithic spacecraft, a fractionated free-flying spacecraft uses multiple spacecraft modules. These modules are connected only through wireless communication links and, potentially,...

Application Briefs: Communications
DICES Subsystem Multiplexer (Sub-MUX) communications equipment
Quintron Systems
Santa Maria, CA
805-928-4343
www.quintron.com

NASA is installing Quintron’s...

Briefs: Photonics/Optics
Optical Structural Health Monitoring Device

This non-destructive, optical fatigue detection and monitoring system relies on a small and unobtrusive light-scattering sensor that is installed on a component at the beginning of its life in order to periodically scan the component in situ. The method involves using a laser beam to scan the surface...

Articles: Manufacturing & Prototyping

While automotive, aerospace, and high-tech equipment manufacturers are early adopters of wireless networks, the overall manufacturing industry has been...

Briefs: Information Technology

A method of constructing certain low-density parity-check (LDPC) codes by use of relatively simple loop-free coding modules has been developed. The subclasses of LDPC codes to which the...

Briefs: Information Technology

Low-density parity-check (LDPC) codes characterized by minimum Hamming distances proportional to block sizes have been demonstrated. Like the codes mentioned in the immediately...

Articles: Software

The traditional engineering response to testing a new wireless standard often involves selecting a box instrument with the closest specifications. For automated test systems with...

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