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Advanced Rapid Imaging and Analysis for Earthquakes

NASA’s Jet Propulsion Laboratory, Pasadena, California Advanced Rapid Imaging and Analysis for Earthquakes (ARIA-EQ) will be the first coordinated effort to automate geodetic imaging capabilities so they can be used for hazard response. The innovation is an automatic geodetic imaging data system that is the foundation for an operational hazard response center that integrates InSAR (interferometric synthetic aperture radar), GPS (Global Positioning System), seismology, and modeling to deliver actionable science and situational awareness products.

Posted in: Briefs, Data Acquisition

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Novel Method to Collect Saliva for Cortisol and DHEA Measurement

This method is noninvasive, rapid, inexpensive, and does not require trained medical personnel, and samples can be stored at room temperature for at least six months. Lyndon B. Johnson Space Center, Houston, Texas Saliva is an easily accessible body fluid containing important biological markers of physiological regulation in the body. The ability to use saliva to monitor the health and disease state of an individual is a highly desirable goal for health promotion and healthcare research. Saliva can reflect tissue levels of some natural substances and a large variety of molecules introduced for therapeutic use, emotional status, hormonal status, immunological status, neurological effects, and nutritional and metabolic status. A major drawback of using saliva as a diagnostic fluid has been that analytes (substances undergoing analysis) are generally present in lower amounts in saliva than in blood.

Posted in: Briefs, Data Acquisition

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Cryogenic Propellant Feed System Analytical Tool

This parametric tool rapidly predicts heat leak into cryogenic propellant distribution lines. Lyndon B. Johnson Space Center, Houston, Texas The Propellant Feed System Analytical Tool (PFSAT) predicts heat leak based on insulation type, installation technique, line supports, penetrations, and instrumentation. It also determines the optimum orifice diameter for an optional thermodynamic vent system (TVS) to counteract heat leak into the feed line, and ensures that the temperature constraints at the end of the feed line are met. PFSAT was developed primarily using Fortran 90 code because of its computational speed and its ability to access directly real fluid property subroutines in the Reference Fluid Thermodynamic and Transport Prop erties (REFPROP) database developed by NIST.

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Radiation-Hardened, High-Voltage, Quad-Channel Amplifier

Goddard Space Flight Center, Greenbelt, Maryland Aradiation-hard, 130-Volt, 100-KHzcapable, quad-channel operational amplifier with corresponding power supply and 6th-order Bessel filter circuitry has been designed, fabricated, and successfully tested. To control two-axis microelectromechanical systems (MEMS)-based mirrors, a differential high-voltage amplifier is required. The bandwidth of these mirrors is generally

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Reduced-Cost, Chirped Pulse, Fourier Transform Microwave (CP-FTMW) Spectrometer Using Direct Digital Synthesis

This technology could be used to further extend the bandwidth of the instrument. Goddard Space Flight Center, Greenbelt, Maryland Microwave spectroscopy is an invaluable tool for studying the structure, dynamics, and even the handedness of gas phase species. In particular, the specificity of microwave spectroscopy has been central to the unambiguous identification of the great majority of molecules detected in the interstellar medium. Applications of microwave techniques to problems in physical chemistry and molecular astrophysics have been greatly accelerated by developments in laboratory techniques.

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Signal Digitizer and Cross-Correlation ASIC

The device can correlate outputs from a large number of receivers. NASA’s Jet Propulsion Laboratory, Pasadena, California Microwave interferometry provides a means of synthesizing large scanning antennas that are not otherwise physically practical for spaceborne Earth observational systems. By cross-correlating multiple receivers of an array, high-resolution images are synthesized from a sparse — or thinned — array of small antennas rather than relying on extremely large mechanically scanned antennas. For Earth observations from space, high-datarate cross correlators are required that operate with low power and have low mass and complexity. ASIC (application-specific integrated circuit) cross-correlators are an enabling technology for space-based interferometry. An ASIC CMOS (complementary metal-oxide semiconductor) cross-correlator was developed to correlate outputs from a large number of receivers.

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Image Capture to Stereo Correlation in an FPGA

NASA’s Jet Propulsion Laboratory, Pasadena, California In this work, there were four independent vision modules implemented in an FPGA: a CameraLink camera interface, rectification, bilateral filtering, and stereo disparity correlation. Each module was originally designed to run from end to end, not in a pipeline with the other modules. This limited throughput to 3.75 Hz.

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