What is Remote Sensing?
EDAR is a Quantum Jump in Remote Sensing Technology
Remote sensing is a powerful tool for emissions testing. Using the principles of inelastic scattering of infrared to ultraviolet light, remote sensing can detect the presence, relative concentrations, and quantities of specific gaseous compounds in a gaseous plume. Hager Environmental & Atmospheric Technologies (HEAT) has developed a technology using these principles known as Emissions Detection And Reporting (EDAR.)
EDAR technology is a laser-based system that uses the same technology as active satellite remote sensing platforms. Dr. J. Stewart Hager, founder of HEAT, LLC, is leveraging his knowledge gained from working on NASA’s ASCENDS satellite mission.
The LiDAR system is similar to active satellite platforms such as the Active Sensing of CO2 over Nights, Days, and Seasons, or ASCEND. Lessons learned from the research and development of such space-based platforms have been applied at a distance of 10 meters as opposed to 690,000 meters (Sun-synchronous orbit). Our new system can remotely measure quantities and relative amounts of target molecules in an exhaust plume. The new EDAR technology uses lasers to simultaneously measure CO2, CO, NOx, HC and opacity (PM.) EDAR scans the entire exhaust plume to retrieve absolute amounts and also to find the optically thickest part of the plume to maximize SNR for relative amount retrievals.
EDAR is a LiDAR system that measures total column abundances in the same way as active remote sensing satellite platforms. Retrievals are more sensitive, more accurate and more reliable using lasers instead of a broadband system.