Bridger is expanding the use of our swept laser technology to enable gas sensing in addition to, and in combination with, distance measurements.  Our work is currently focused on measuring methane for the oil and gas industry and carbon dioxide for climate research and the security and defense industry.  Our solutions offer geo-referenced 3D imagery with gas concentration overlays for large-area leak detection, localization and quantification applications.  The following two figures show example data acquired using Bridger’s carbon dioxide Gas-Mapping 3D Imager prototype.

Gas Imager Scan

Figure 1. High resolution scan of the air-conditioning unit behind Bridger’s facility in Bozeman, MT. A pipe emitting CO2 at a rate of 10 liters per minute has been placed in the scene to simulate a gas leak. The topography image (left) shows a 3D point cloud with 1 cm resolution colored by height and gas concentration image (right) shows the 3D point cloud overlaid with RGB color and gas concentration data. The nominal CO2 concentration in this image is 401 ppm. Concentrations exceeding 410 ppm are overlaid with a ‘jet’ color map on the 3D point cloud.

Figure 2. Buried pipeline CO2 leak detection scenario. (Left) A picture of the measurement scene including Bridger’s prototype CO2 imager mounted on a 10 m mast and the location of the CO2 pipeline that is buried 6’ below the ground surface. (Right) Data from a typical scan showing cm resolution 3D topography with a spatially registered CO2 concentration map indicating the locations where gas from the pipeline leaks emanates from the ground surface.

Figure 2. Buried pipeline CO2 leak detection scenario. (Left) A picture of the measurement scene including Bridger’s prototype CO2 imager mounted on a 10 m mast and the location of the CO2 pipeline that is buried 6’ below the ground surface. (Right) Data from a typical scan showing cm resolution 3D topography with a spatially registered CO2 concentration map indicating the locations where gas from the pipeline leaks emanate from the ground surface.

Some of Bridger’s publicly releasable past and current gas sensing contract work include:


LiDAR-Based High Resolution 3D Imager and Remote Gas Sensor

Bridger has been awarded funding from the Department of Energy to develop a light detection and ranging (LiDAR) system capable of simultaneous 3D point cloud and carbon dioxide concentration measurements for environmental terrestrial monitoring applications. Bridger’s CO2 Gas-Mapping 3D Imager is well suited for applications requiring high-resolution, high-sensitivity and large-area gas detection including: CO2 emissions monitoring, verification of carbon sequestration efforts and environmental research to better understand the carbon cycle and its roll in climate change.


Mobile LiDAR Sensor for Methane Leak Detection

Bridger has been awarded funding from the ARPA-E MONITOR program to develop a mobile light detection and ranging (LiDAR) system capable of rapid and precise methane measurements resulting in 3D topographic information about potential leak locations and flow rates. This mobile LiDAR system will dramatically reduce the cost to identify, quantify, and locate methane leaks compared to currently available technologies.  The system will offer fast, automated site scans, reliable leak localization and flow rate determination, and geo-referenced 3D record data products for hassle-free regulatory compliance.