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Method and Device for Biometric Subject Verification and Identification

This technique can be used by homeland security personnel, in airports, and by law enforcement for identity verification. Ames Research Center, Moffett Field, California This invention allows the verification and identification of a person based on features extracted from one or more electrocardiographic leads or channels. For identification purposes, the invention can be used to identify a subject from a group of known subjects. For verification purposes, the invention can be used to allow access to secured facilities or remote services over the Internet to allow access to or control of computers, cars, airplanes, ships, and submarines; to enable/disable electronic alarms; to open safes or security deposits; and to enable guns and special weapons that require restricted access.

Posted in: Briefs

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

Goddard Space Flight Center, Greenbelt, Maryland 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 natural thermal emissions to remotely sense Earth phenomena of interest to science (soil moisture, for example) in the technologically challenging microwave L-band. In this 1.4-GHz band (used by SMAP), a terrestrial source thermal signal emission to space suffers less attenuation by the intervening atmosphere. Unfortunately, the relative insensitivity of the L-band region to atmospheric effects also makes it an extremely attractive spectral range for wireless communications and radars that are causing radio frequency interference (RFI) with the spaceflight science radiometer instruments’ terrestrial phenomenon signal of interest, even as this band is protected by radio-communication regulations. Detection and excision or mitigation of the RFI-contaminated measurements is a challenge to the state of the art.

Posted in: Briefs, TSP

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Advanced Methodology for Precisely Simulating RTD Sensor Types

This technology has applications in plant process simulation, hardware-in-the loop testing of electronic control units in automobiles and avionics, and spacecraft and satellite systems testing. VTI Instruments Corporation, Irvine, California Resistance thermometers, also called resistance temperature detectors (RTDs), are very common sensors used for temperature measurement. Their reliability, ruggedness, wide range, and value make them popular in the process industry and research laboratories alike. A wide range of instruments, PLC I/O systems, data acquisition, and control systems are designed to interface with these sensors and perform actions based on their measured value. Testing of such systems requires a sensor to be simulated, where hardware-in-the-loop testing is mandatory. Often the validation of such systems will end up being a complex issue if not properly planned.

Posted in: Briefs, Sensors

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Sampling Mechanism for a Comet Sample Return Mission

A similar sampling mechanism could be deployed in dangerous situations on Earth. Goddard Space Flight Center, Greenbelt, Maryland Sample return missions have the ability to vastly increase scientific understanding of the origin, history, current status, and resource potential of solar system objects including asteroids, comets, Mars, and the Moon. However, to make further progress in understanding such bodies, detailed analyses of samples are needed from as many bodies as possible. A standoff sample collection system concept has been developed that would quickly obtain a sample from environments as varied as comets, asteroids, and permanently shadowed craters on the Moon, using vehicles ranging from traditional planetary spacecraft to platforms such as hovering rotorcraft or balloons on Mars, Venus, or Titan. The depth of penetration for this harpoon- based hollow collector was experimentally determined to be proportional to the momentum of the penetrator in agreement with earlier work on the penetration of solid projectiles. A release mechanism for the internal, removable sample cartridge was tested, as was an automatic closure system for the sample canister.

Posted in: Briefs, TSP, Machinery & Automation, Monitoring

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Development of a Turnkey Clear Air Turbulence Detection System

Turbulence is determined via three infrasonic microphones. Langley Research Center, Hampton, Virginia Currently, the only available means of reporting clear air turbulence (CAT) is the pilot report (PIREP), whereby a pilot experiencing turbulence reports their location and associated data. In this report, a system is proposed that would allow the detection of CAT through infrasonic emissions.

Posted in: Briefs, TSP, Aviation, Detectors

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Multivariate Time Series Search Capability to Identify Complex Patterns in Large Datasets

Ames Research Center, Moffett Field, California There exist many datasets that can be viewed as multivariate time series, such as the daily high temperature at a locality, sensor recordings in diagnostic systems and scientific data, and music and video recordings. These time series reside in large repositories, and there is often a need to search for particular time series exhibiting certain types of behaviors. Many current approaches to time series search are too slow on large repositories, or constrain the range of possible queries.

Posted in: Briefs, Data Acquisition, Mathematical/Scientific Software

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NGDCS Linux Application for Imaging-Spectrometer Data Acquisition and Display

NASA’s Jet Propulsion Laboratory, Pasadena, California A simple method of controlling recording and display of imaging spectrometer data in (airborne) flight was needed. Existing commercial packages were overly complicated, and sometimes difficult to operate in a bouncing plane. The software also was required to keep up with the imaging data rate, while still running on commodity hardware and a desktop operating system. Finally, the software needed to be as robust as possible — repeating a flight because of lost data is sometimes impossible, and always expensive.

Posted in: Briefs, Displays/Monitors/HMIs, Data Acquisition

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