Sensors/Data Acquisition

RFID Waveguide, Antenna, and Cavity Sensors

Potential uses include automated inventory management applications such as dispensing of pills, grains, liquids, or other items to which attachment of RFID tags is impossible. Lyndon B. Johnson Space Center, Houston, Texas Radio frequency identification (RFID) tags consist of an antenna and an integrated circuit. The antenna is typically the more costly of the two components, and, by far, the largest. As antenna size decreases, efficiency also decreases, and the read range is also reduced accordingly. Moreover, some items are too small to permit RFID tag attachment. Other small items tend to be of such low value that the tag cost approaches the value of the individual item, rendering RFID item level tracking ineffective.

Posted in: Briefs, TSP, Sensors

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Sensor Planning Service for Submitting Requests to Task the EO-1

This interface allows the user to submit requests for observation of instruments on satellite. NASA’s Jet Propulsion Laboratory, Pasadena, California A Web interface framework has been developed that implements the Open Geospatial Consortium (OGC) Sensor Planning Service (SPS) specification. The OGC defines the SPS to “provide information concerning content and encoding of the parameter data that has to be provided in order to task a sensor.” This interface allows the user to provide input parameters to submit requests for observation of instruments on the Earth Observing-1 (EO-1) satellite.

Posted in: Briefs, Sensors

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Transparent and Ubiquitous Sensing Technology

Langley Research Center, Hampton, Virginia Traditionally, sensor systems are considered independent systems that are separately designed, manufactured, and integrated into a target system such as an aircraft. In most cases, this is a complex and costly process including sensor design, installation, wiring, testing, and maintenance. The sensor size, installation method, wiring, and cost limit the sensor node in very limited numbers and positions. Moreover, because of limitations, there are many places where the sensor system cannot reach.

Posted in: Briefs, Sensors

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Position Sensing and Formation Flying Using Optical Beacons

Two beacons on the starshade do the job. NASA’s Jet Propulsion Laboratory, Pasadena, California One way of imaging exoplanets around nearby stars is to use a starshade in conjunction with a space telescope. Typically, the starshade, which resembles a sunflower in outline, is ~ 30 meters in diameter. The starshade is flown about 50,000 km in front of the telescope, and when positioned directly in the telescope’s line of sight to the star, blocks the starlight, casting a deep shadow onto the telescope. Exoplanets orbiting the star and having a small angle to the line of sight will be visible because the starlight is extinguished. During the observation period, the position of the telescope needs to be maintained within about 1 m of the center of the shadow for maximum shading of the starlight.

Posted in: Briefs, Sensors

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Multiple-Frequency-Band Software-Defined Radiometer

Goddard Space Flight Center, Greenbelt, Maryland Remote sensing — the use of spacebased satellite technologies to obtain information on environmental variables — in combination with other types of data, can provide information on changes in the Earth’s surface and atmosphere that are critical for weather forecasting and responding to human welfare issues (disease outbreaks, food shortages, and floods). Satellites and other remote sensing tools have gathered a great deal of useful data on the Earth’s climate systems, drainage systems, geologic structures, thermal anomalies, geomorphologic features, and distribution of vegetation.

Posted in: Briefs, TSP, Sensors

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Gamma-Ray Spectroscope Supports Asteroid Mining Missions

A new gamma-ray spectroscope detects the veins of gold, platinum, and rare earths hidden within the asteroids, moons, and other airless objects floating around the solar system. The sensor, developed by teams at Vanderbilt and Fisk Universities, NASA’s Jet Propulsion Laboratory, and the Planetary Science Institute, will allow miners to find valuable materials beyond Earth.

Posted in: News, Detectors

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Dynamic Weather Routes (DWR)

Recent test results indicate an estimated actual savings of 3,729 minutes for 575 AA flights. Ames Research Center, Moffett Field, California Convective weather systems, i.e., thunderstorms, are the leading cause of flight delay in U.S. airspace. Airline dispatchers must file their flight plans 1 to 2 hours before takeoff, and are often required to incorporate large buffers to forecast weather. Weather changes as flights progress, and airline dispatchers, Federal Aviation Administration (FAA) traffic managers, and air traffic controllers are especially busy during weather events. Workable opportunities for more efficient routes around bad weather are often missed, and automation does not exist to help operators determine when weather avoidance routes have become stale and could be updated to reduce delay.

Posted in: Briefs, Data Acquisition

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