Airborne water vapor DIAL system developmentA differential absorption lidar (DIAL) system developed at NASA Langley Research Center for the remote measurement of atmospheric H2O and aerosols from an aircraft is briefly discussed. This DIAL system utilizes a Nd:YAG laser-pumped dye laser as the off-line transmitter and a narrowband, tunable Alexandrite laser as the on-line transmitter. A 1-m monochromator and a multipass absorption cell are used to position the on-line laser to the center of the H2O line. The receiver system has a 14-in. diameter, f/7 Celestron telescope to collect the backscattered laser light and focus in into the detector optics. Return signals are converted to electrical signals by the optical detector and are digitalized and stored on magnetic tape. The results of fligh tests of the system are shown.
Document ID
19910040192
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Higdon, Noah S. (NASA Langley Research Center Hampton, VA, United States)
Browell, Edward V. (NASA Langley Research Center Hampton, VA, United States)
Ponsardin, Patrick (NASA Langley Research Center Hampton, VA, United States)
Grossmann, Benoist E. (Old Dominion University Research Foundation, Norfolk, VA, United States)