Airborne lidar LEANDRE II for water-vapor profiling in the troposphere. I. System description

被引：88

作者：

Bruneau, D ^{[1
]}

Quaglia, P ^{[1
]}

Flamant, C ^{[1
]}

Meissonnier, M ^{[1
]}

Pelon, J ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, Serv Aeron, F-75252 Paris 05, France

来源：

APPLIED OPTICS | 2001年 / 40卷 / 21期

关键词：

D O I：

10.1364/AO.40.003450

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The airborne differential absorption lidar LEANDRE II, developed for profiling tropospheric water-vapor mixing ratios, is described. The emitter is a flash-lamp-pumped alexandrite laser, which operates in a double-pulse, dual-wavelength mode in the 727-736 nm spectral domain. Two 50-mJ successive on-line and off-line pulses with an output linewidth of 2.4 X 10(-2) cm(-1) and a spectral purity larger than 99.99% are emitted at a 50-mus time interval. The spectral positioning is controlled in real time by a wavemeter with an absolute accuracy of 5 X 10(-3) cm(-1). The receiver is a 30-cm aperture telescope with a 3.5-mrad field of view and a l-nm filter bandwidth. These instrument characteristics are defined for measuring the water-vapor mixing ratio with an accuracy better than 0.5 g kg(-1) in the first 5 km of the atmosphere with a range resolution of 300 m, integration on 100 shots, and an instrumental systematic error of less than 2%. The sensitivity study and first results are presented in part II [Appl. Opt. 40, 3462-3475 (2001)].. (C) 2001 Optical Society of America.

引用

页码：3450 / 3461

页数：12

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