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High-sensitivity gas-mapping 3D imager and method of operation

Patent ·
OSTI ID:1998399
;
Measurement apparatuses and methods are disclosed for generating high-precision and -accuracy gas concentration maps that can be overlaid with 3D topographic images by rapidly scanning one or several modulated laser beams with a spatially-encoded transmitter over a scene to build-up imagery. Independent measurements of the topographic target distance and path-integrated gas concentration are combined to yield a map of the path-averaged concentration between the sensor and each point in the image. This type of image is particularly useful for finding localized regions of elevated (or anomalous) gas concentration making it ideal for large-area leak detection and quantification applications including: oil and gas pipeline monitoring, chemical processing facility monitoring, and environmental monitoring.
Research Organization:
Bridger Photonics, Inc., Bozeman, MT (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AR0000544
Assignee:
Bridger Photonics, Inc. (Bozeman, MT)
Patent Number(s):
11,656,075
Application Number:
17/399,106
OSTI ID:
1998399
Country of Publication:
United States
Language:
English

References (6)

Integrated Linewidth Reduction of a Tunable SG-DBR Laser conference January 2013
Linearization of the frequency sweep of a frequency-modulated continuous-wave semiconductor laser radar and the resulting ranging performance journal May 1999
Etalon Effects Analysis in Tunable Diode Laser Absorption Spectroscopy Gas Concentration Detection System Based on Wavelength Modulation Spectroscopy conference June 2010
Linearizing optical frequency-sweep of a laser diode for FMCW reflectometry journal January 1996
Open-Path Tunable Diode Laser Absorption Spectroscopy for Acquisition of Fugitive Emission Flux Data journal May 2005
A reassessment of current volcanic emissions from the Central American arc with specific examples from Nicaragua journal January 2006

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