Gas-correlation lidar

Edner, Hans; Svanberg, Sune; Uneus, L.; Wendt, W.

doi:10.1364/ol.9.000493

Cited by 40 publications

(10 citation statements)

References 11 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The AMR-configuration is closed to a low-spectral-resolution differential absorption spectroscopy scheme which uses a broadband laser source instead of a spectrally Remote sensing of atmospheric gases 269 extended light source (white light continuum, spectroscopic lamp, natural light source) or a narrow band laser. Amplitude modulation at the reception has also been performed by Edner et al [21] and Minato et al [19]. However, in these cases, the modulation is performed thanks to a gas cell containing the target gas instead of optical filters as in our case.…”

Section: Amplitude Modulation and Detection Scheme In The Amr-configumentioning

confidence: 95%

“…Examples of these new advances are the broadband differential absorption lidar [13][14][15][16][17][18][19] and the optical correlation spectroscopy lidar (OCS-lidar) methodology, introduced by B. Thomas et al [20]. The OCS-lidar methodology is a new differential absorption spectroscopy method based on pioneer work performed on gas correlation lidar [21]. The OCS-lidar has been extensively described in theoretical papers [20,22] for methane remote sensing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Remote sensing of atmospheric gases with optical correlation spectroscopy and lidar: first experimental results on water vapor profile measurements

et al. 2013

View full text Add to dashboard Cite

In this paper, the first experimental demonstration of the optical correlation spectroscopy lidar (OCS-lidar) is proposed. It is a new active remote sensing methodology to measure range-resolved atmospheric gas concentrations, based on broadband laser spectroscopy and light amplitude modulation. As a first step, a numerical study is performed for OCS-lidar measurements to optimize the accuracy of the range-resolved gas concentration measurement. Then, we demonstrate the ability of the OCS-lidar methodology to monitor the water vapor in the planetary boundary layer using the 4m 720-nm absorption band. In addition to this first experimental proof, two different experimental configurations are proposed. The amplitude modulation, related to the optical correlation spectroscopy, is operated either at the emission with an active amplitude modulator before the backscattering process, or with passive optical filters on the laser backscattered light. For both configurations, range-resolved gas concentration measurements, achieved with a micro-pulse ground-based OCS-lidar, are presented. An extended discussion presents the mixing-ratio accuracy, which reaches ±1,000 ppm at a 2,000-m range for a range resolution of 200 m. The differences between the two experimental configurations are also discussed.

show abstract

Section: Amplitude Modulation and Detection Scheme In The Amr-configumentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Remote sensing of atmospheric gases with optical correlation spectroscopy and lidar: first experimental results on water vapor profile measurements

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Although very powerful and versatile, most laser-based systems tend to be complex and costly, which may render their widespread application difficult. The recently introduced gas-correlation lidar concept 9 provides some possibilities for system simpli-fications. Passive remote-sensing techniques are simple but have limited applicability.…”

Section: -5)mentioning

confidence: 99%

Differential optical absorption spectroscopy system used for atmospheric mercury monitoring

et al. 1986

View full text Add to dashboard Cite

A high-resolution differential optical absorption spectroscopy (DOAS) system for long-path atmospheric pollution monitoring is described. The system, consisting of a broadband lamp and a dispersive, fastscanning optical receiver, separated by a few kilometers, was used in measurements of different pollutants, highlighted by the monitoring of the local concentration of atomic mercury. Mercury levels in the ppt (1:1012) range were assessed by comparisons with laboratory measurements.

show abstract

“…Specific gas visualization and quantification with a technique that relies on passive background radiation and elimination of problems with interfering gases, aerosol particles and varying background radiation have not existed until now. Two complementary techniques, based on lasers are the LIDAR (light detection and ranging) and the BAGI (backscatter absorption gas imaging) techniques [3][4][5]. The lidar technique has been used to map crosssections of the air downwind from industrial sites by vertical scanning a pulsed laser beam [6].…”

Section: Introductionmentioning

confidence: 99%

Gas visualization of industrial hydrocarbon emissions

Sandsten¹,

Edner²,

Svanberg³

2004

Opt. Express

View full text Add to dashboard Cite

Gases leaking from a polyethene plant and a cracker plant were visualized with the gas-correlation imaging technique. Ethene escaping from flares due to incomplete or erratic combustion was monitored. A leakage at a high-pressure reactor tank could be found and visualized by scanning the camera system over the industrial site. The image processing methods rely on the information from three simultaneously captured images. A direct and a gas-filtered infrared image are recorded with a split-mirror telescope through a joint band-pass filter. The resulting path-integrated gas concentration image, derived from the two infrared images, is combined with a visible image of the scene. The gas-correlation technique also has the potential to estimate the flux in the gas plume by combining a wind vector map, derived by cross-correlating the images in time, with a calibrated gas path-integrated concentration image. The principles of the technique are outlined and its potential discussed.

show abstract

Gas-correlation lidar

Cited by 40 publications

References 11 publications

Remote sensing of atmospheric gases with optical correlation spectroscopy and lidar: first experimental results on water vapor profile measurements

Remote sensing of atmospheric gases with optical correlation spectroscopy and lidar: first experimental results on water vapor profile measurements

Differential optical absorption spectroscopy system used for atmospheric mercury monitoring

Gas visualization of industrial hydrocarbon emissions

Contact Info

Product

Resources

About