Range-resolved differential absorption lidar: optimization of range and sensitivity
Abstract
A practical range-resolved differential absorption and scattering lidar has been optimized for maximum range and sensitivity. Compression of the signal amplitude dynamics, quasi-simultaneous dual-pulse operation, the processing sequence of the primary signals, a method of alignment mismatch compensation, and the effects of temporal and spatial averaging are discussed. Experimental verifications with a four-laser system for NO2 and SO2 are presented. For NO2 a range of up to 6 km at a sensitivity of 10 ppb and for SO2 a range up to 3 km at 15-ppb sensitivity have been accomplished.
- Publication:
-
Applied Optics
- Pub Date:
- July 1985
- DOI:
- 10.1364/AO.24.001950
- Bibcode:
- 1985ApOpt..24.1950S
- Keywords:
-
- Air Pollution;
- Gas Analysis;
- Laser Applications;
- Optical Radar;
- Optimization;
- Range (Extremes);
- Gas Lasers;
- Laser Outputs;
- Nitrogen Dioxide;
- Sensitivity;
- Sulfur Dioxides;
- Lasers and Masers;
- LIDAR: DIFFERENTIAL ABSORPTION;
- NITROGEN OXIDES