Advanced imaging systems
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Ning Li: Designing integrated circuits for the future
A principal research engineer at SRI’s Advanced Imaging Lab shares the challenge — and the joy — of building products that benefit the world.
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ENVision: Lifting the veil of the night using lightweight night vision glasses
DARPA and SRI seek to create night vision glasses that see clearly even in the darkest of situations.
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Next-generation welding helmet gives unprecedented scope and clarity for better productivity, accelerated training
XDR weld visualization technology gives welders full 3D view of workspace, as smart helmet collects data to help train new technicians.
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Tracking Elevated Pollution Layers with a Newly Developed Hyperspectral Sun/Sky Spectrometer (4STAR): Results from the TCAP 2012 and 2013 Campaigns
We compare results with coincident measurements. We find 0.045 g/cm2 (4.2%) negative bias and 0.28 g/cm2 (26.3%) root-mean-square difference (RMSD) in water vapor layer comparison with an in situ hygrometer and an overall RMSD of 1.28 g/m3 (38%) water vapor amount in profile by profile comparisons, with differences distributed evenly around zero.
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Hyperspectral Aerosol Optical Depths from TCAP Flights
The favorable intercomparisons herald 4STAR’s spatially-resolved high-frequency hyperspectral products as a reliable tool for climate studies and satellite validation.
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On the Potential to Enhance the Spatial Resolution of the Day/Night Band (DNB) Channel of the Visible and Infrared Imaging Radiometer Suite (VIRRS) for the Second Joint Polar Satellite System (JPSS-2) and Beyond
This paper examines the feasibility and potential benefits of enhancing the spatial resolution of the VIIRS DNB channel for the JPSS-2 mission and beyond.
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Aberrant Basal Ganglia Metabolism in Fragile X Syndrome: A Magnetic Resonance Spectroscopy Study
This study provides evidence of metabolite differences in the caudate nucleus, a brain region of potential importance to our understanding of the neural deficits underlying FXS.
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Spectrometer for Sky-Scanning Sun-Tracking Atmospheric Research (4STAR): Instrument Technology
Test results establishing the performance of the instrument against the full range of operational requirements are presented, along with calibration, engineering flight test, and scientific field campaign data and results.
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The Solar Orbiter Imager (SoloHI) Instrument for the Solar Orbiter Mission
We present the design and pre-launch performance of the Solar Orbiter Heliospheric Imager (SoloHI) which is an instrument prepared for inclusion in the ESA/NASA Solar Orbiter mission, currently scheduled for launch in 2020.
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Development and Test of an Active Pixel Sensor Detector for Heliospheric Imager on Solar Orbiter and Solar Probe Plus
The devices are robust (
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Maximizing Availability of Content in Disruptive Environments by Cross-Layer Optimization
Inspired by delay- and disruption-tolerant networking, this paper presents a distributed cross-layer monitoring and optimization method for secure content delivery as a first step toward decentralized content-based mobile ad hoc networking.
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Comparison of 32 x 128 and 32 x 32 Geiger-Mode APD FPAs for Single Photon 3D LADAR Imaging
We present results obtained from 3D imaging focal plane arrays (FPAs) employing planar-geometry InGaAsP/InP Geiger-mode avalanche photodiodes (GmAPDs) with high-efficiency single photon sensitivity at 1.06 μm.