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Title: Broad-area laser awareness sensor

Abstract

A laser-strike detection system includes an imaging sensor mounted on a platform, and a computing device. The imaging sensor outputs image frames that are each representative of a portion of the platform at a different time, during which a laser may be striking the platform. The computing device receives the image frames, and computes a delay map that indicates time-of-arrival delays of the laser beam at points on the portion of the platform. The computing device converts the delay map to a path-length variation map by multiplying the delay map by the propagation speed of light. The computing device fits a plane to the path-length variation map constrained by a topological model of the platform. The computing device computes angular deflections in x- and y-directions based upon the fit, which angular deflections define a direction from the platform to an emitter of the laser beam.

Inventors:
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1986912
Patent Number(s):
11519997
Application Number:
17/337,837
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
DOE Contract Number:  
NA0003525
Resource Type:
Patent
Resource Relation:
Patent File Date: 06/03/2021
Country of Publication:
United States
Language:
English

Citation Formats

Sandusky, John. Broad-area laser awareness sensor. United States: N. p., 2022. Web.
Sandusky, John. Broad-area laser awareness sensor. United States.
Sandusky, John. Tue . "Broad-area laser awareness sensor". United States. https://www.osti.gov/servlets/purl/1986912.
@article{osti_1986912,
title = {Broad-area laser awareness sensor},
author = {Sandusky, John},
abstractNote = {A laser-strike detection system includes an imaging sensor mounted on a platform, and a computing device. The imaging sensor outputs image frames that are each representative of a portion of the platform at a different time, during which a laser may be striking the platform. The computing device receives the image frames, and computes a delay map that indicates time-of-arrival delays of the laser beam at points on the portion of the platform. The computing device converts the delay map to a path-length variation map by multiplying the delay map by the propagation speed of light. The computing device fits a plane to the path-length variation map constrained by a topological model of the platform. The computing device computes angular deflections in x- and y-directions based upon the fit, which angular deflections define a direction from the platform to an emitter of the laser beam.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {12}
}

Works referenced in this record:

Visible Light Sensor Configured for Glare Detection and Controlling Motorized Window Treatments
patent-application, December 2019


Method and Arrangement for Estimating at Least One Parameter of an Intruder
patent-application, July 2011


Adaptive Temporal Image Filtering for Rendering Realistic Illumination
patent-application, June 2022


Monitoring Device, Method Thereof
patent-application, March 2013