Lilian K. Casias

X-ray induced degradation of III-V infrared detectors

Guddi Suman, Mahmudur Rehman, Victor J. Patel, Lilian K. Casias et autres

Characterization of point-source transient events with a rolling-shutter compressed sensing system (Erratum)

Frank Qiu, Joshua Michalenko, Lilian K. Casias, Cameron J. Radosevich et autres

Publisher's Note: This paper, originally published on 8 October 2024, was replaced with a corrected/revised version on 11 March 2025. If you downloaded the original PDF but are unable to access the revision, please contact SPIE Digital Library Customer Service for assistance.

Quantifying effluent flow with event-based sensors

Bjorn Kjellstrand, Lilian K. Casias, Kaylin Hagopian, Christian Pattyn et autres

Characterization of point-source transient events with a rolling-shutter compressed sensing system

Frank Qiu, Josh Michalenko, Lilian K. Casias, Cameron J. Radosevich et autres

Point-source transient events (PSTEs) – optical events that are both extremely fast and extremely small – pose several challenges to an imaging system. Due to their speed, accurately characterizing such events often requires detectors with very high frame rates. Due to their …

Characterization of point-source transient events with a rolling-shutter compressed sensing system

Frank Qiu, Joshua Michalenko, Lilian K. Casias, Cameron J. Radosevich et autres

Point-source transient events (PSTEs) - optical events that are both extremely fast and extremely small - pose several challenges to an imaging system. Due to their speed, accurately characterizing such events often requires detectors with very high frame rates. Due to their …

Characterization of point-source transient events with a rolling-shutter compressed-sensing system (presentation)

Lilian K. Casias, Joshua Michalenko, Cameron Radosevich, Jonathon Slater et autres

events with a rollingshutter compressed sensing system Demonstration of Improved Sampling of Compressed Observations for Transient Event Characterization (DISCOTECh) 8/13/2024

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Novel algorithm development for event-based sensing deployment

Bjorn Kjellstrand, Lilian K. Casias, Kaylin Hagopian, Christian Pattyn et autres

Event-based sensors (EBS) consist of a pixelated focal plane array in which each pixel is an independent asynchronous change detector. The analog asynchronous array is read by a synchronous digital readout and written to disk. As a result, EBS pixels consume minimal …

PET ROCK: Persistent Event-based sensing at Testbeds Real-world Objective Comparison of Key-hardware

Joshua Shank, Liam P. Andrus, Lucas Kunsman, Garrett Giddings et autres

Goals and ObjectivesWhile recent studies have demonstrated event-based sensing (EBS) as a promising remote detection technology, there have been no direct comparisons of EBS against more traditional technologies in real-world proliferation detection scenarios.This project will prove with quantifiable results how event-based sensing …

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Event-based sensing for the detection of modulated signals in degraded visual environments

Christian Pattyn, Alexander W. Edstrom, Andres L. Sanchez, Karl R. Westlake et autres

Event-based sensors are a novel sensing technology which capture the dynamics of a scene via pixel-level change detection. This technology operates with high speed (>10 kHz), low latency (10 μs), low power consumption (<1 W), and high dynamic range (120 dB). Compared …

Event-based sensing for the detection of modulated signals in degraded visual environments

Christian Pattyn, Å. Edström, Andrés Sánchez, Karl R. Westlake et autres

This paper describes objective technical results and analysis.Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S.

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Carrier concentration and in-plane mobility in both non-intentionally and Si-doped InAsSb and InAs/InAsSb type-II superlattice materials for space-based infrared detectors

Lilian K. Casias, Gilberto Antonio Umana-Membreno, Preston T. Webster, Perry C. Grant et autres

The sensitivity of III-V-based infrared detectors is critically dependent upon the carrier concentration and mobility of the absorber layer, and thus, accurate knowledge of each is required to design structures for maximum detector performance. Here, measurements of the bulk in-plane resistivity, in-plane …

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Investigation of Event-based Sensing for Proliferation Detection.

Joshua Shank, Arlo Ames, Lilian K. Casias, Kaylin Hagopian

This paper describes objective technical results and analysis.Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government.