Airborne, Direct-Detection, 2-μm Triple-Pulse IPDA Lidar for Simultaneous and Independent Atmospheric Water Vapor and Carbon Dioxide Active Remote Sensing

Refaat, Tamer F ; Petros, Mulugeta ; Singh, Upendra N ; Antill, Charles W ; Wong, Teh-Hwa ; Remus, Ruben G ; Reithmaier, Karl ; Lee, Jane ; Bowen, Stephen C ; Taylor, Bryant D(Analytical Services and Materials, Inc, Hampton, VA, United States)

关键词: AEROSOLS;    ATMOSPHERIC COMPOSITION;    ATMOSPHERIC MOISTURE;    CARBON DIOXIDE CONCENTRATION;    DATA ACQUISITION;    DIFFERENTIAL ABSORPTION LIDAR (DIAL);    HIGH ALTITUDE;    OPTICAL RADAR;    PULSED LASERS;    RANGEFINDING;    REMOTE SENSING;    TRANSMITTER RECEIVERS;    WATER VAPOR;   

RP-ID  :  NF1676L-29624

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Atmospheric water vapor and carbon dioxide are important greenhouse gases that significantly contribute to the global radiation budget on Earth. A 2-micron triple-pulse, Integrated Path Differential Absorption (IPDA) lidar instrument for ground and airborne atmospheric carbon dioxide and water vapor concentration measurements using direct detection was developed at NASA Langley Research Center. This active remote sensing instrument provides an alternate approach with significant advantages for measuring atmospheric concentrations of the gases. A high energy pulsed laser transmitter approach coupled with sensitive receiver detection provides a high-precision measurement capability by having a high signal-to-noise ratio. This paper presents the concept, development, integration and testing of the 2-micron triple-pulse IPDA. The integration includes the various IPDA transmitter, receiver and data acquisition subsystems and components. Ground and airborne testing indicated successful operation of the IPDA lidar.