Multi-functional Fiber Laser LiDAR Active Carbon Dioxide Research

Multi-functional Fiber Laser LiDAR (MFLL) is an L3Harris-developed remote sensing method that uses a laser to measure the difference in absorption of the atmosphere at two closely spaced wavelengths to precisely measure carbon dioxide (CO2). MFLL is a relatively new light detection and ranging (LiDAR) application for weather, climate, land/ocean, and exploration from satellites, airplanes, and unmanned aerial vehicles. Through the use of fiber lasers and sophisticated signal processing, the MFLL offers enhanced increased power efficiency and longevity compared to conventional systems. L3Harris has developed and deployed several implementations of the MFLL, under real-world field and airborne conditions. These results have validated our physics-based performance models and confirmed successful performance in an operational setting.

ASCENDS (Active Sensing of CO2 Emissions over Nights, Days, and Seasons) Mission Test Flight Verification

For over 10 years, L3Harris has supported ASCENDS spaceborne mission test flights using the MFLL airborne engineering development model to verify the accuracy of ASCENDS’ measurement system.

Atmospheric Carbon and Transport (ACT) America - Measuring Greenhouse Gas Fluxes

The National Aeronautics and Space Administration (NASA) Earth Venture Suborbital project, ACT America, uses L3Harris’ MFLL. The five-year study was the first to use a CO2 remote sensing instrument for sustained scientific research. MFLL will provide precise carbon dioxide measurements to identify the movement of carbon in the atmosphere, the carbon cycle, and how to better inform climate-change mitigation efforts.

Ten Years of Test Flight Evaluations

MFLL began flight evaluation in 2005. Since then it has flown in 12 flight-test campaigns on three different aircraft: five campaigns on Lear-25 between 2005-2007; five campaigns on NASA UC-12 between 2008-2011; and two campaigns on NASA DC-8 bewteen 2010-2011.