A Survey of Laser and Selected Optical Systems for Remote Measurement of Pollutant Gas Concentrations

Grant, William B.; Menzies, Robert T.

doi:10.1080/00022470.1983.10465562

Cited by 37 publications

(6 citation statements)

References 43 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optical remote-sensing techniques are of increasing interest in the area of air pollution monitoring due to their many advantages compared to conventional point-monitoring techniques (Killinger and Mooradian 1983;Grant and Menzies 1983;Sigrist 1994;Ragnarson 1994).…”

Section: Introductionmentioning

confidence: 99%

Locally Weighted Least Squares Kernel Regression and Statistical Evaluation of Lidar Measurements

et al. 1996

View full text Add to dashboard Cite

SUMMARYThe LIDAR technique is an efficient tool in monitoring the distribution of atmospheric species of importance. We study the concentration of atmospheric atomic mercury in an Italian geothermal field and discuss the possibility of using recent results from local polynomial kernel regression theory for the evaluation ofthe derivative of the DIAL curve. A MISE-optimal bandwidth selector, which takes account of the heteroscedasticity in the regression is suggested. Further, we estimate the integrated amount of mercury in a certain area.K E Y woms locally weighted least squares regression; LIDAR measurements; air pollution; atmospheric atomic mercury; geothermal field

show abstract

Section: Introductionmentioning

confidence: 99%

Locally Weighted Least Squares Kernel Regression and Statistical Evaluation of Lidar Measurements

et al. 1996

View full text Add to dashboard Cite

show abstract

“…Although this paper has concentrated on lidar systems for measurement of aerosol concentrations, systems have also been developed for remote measurement of gas concentrations. 2 ' 18 "…”

Section: Two-wavelength Observationsmentioning

confidence: 99%

Application of Surface Based and Airborne Lidar Systems for Environmental Monitoring

Uthe

1983

Journal of the Air Pollution Control Association

View full text Add to dashboard Cite

“…By means of optical remote sensing techniques, such as tuneable laser diodes and Fourier transform infrared spectrometers, a wide variety of chemicals can be detected in situ at concentrations as low as a few parts per million over path lengths of many meters Grant & Menzies, 1983;Todd & Leith, 1990). The fundamental feature of optical sensing instruments is that they provide light extinction (attenuation) measurements.…”

Section: Introductionmentioning

confidence: 99%

Mapping tracer gas concentrations using a modified Low Third Derivative method: numerical study

Cehlin

2018

International Journal of Ventilation

View full text Add to dashboard Cite

In indoor applications, computed tomography is the process of transforming a network of intersecting attenuation measurements into a spatially resolved two-dimensional concentration map. In this study the Low Third Derivative method (LTD) was numerically evaluated and optimized for different conditions. A modified version of the LTD algorithm (LTD m ) was proposed and evaluated against the original version. Eight test maps were reconstructed under different conditions, such as weight ratio, pixel resolution, beam density and measurement noise. Performance of both LTD algorithms was found to be intimately related to the number of peaks and complexity in the test map and the steepness of the peaks. The LTD m algorithm improved the quality, especially for concentration maps including steep gradients and regions with very low concentrations. The LTD m method heavily lessened aliasing distortions and efficiently minimized the effects of noise.

show abstract

A Survey of Laser and Selected Optical Systems for Remote Measurement of Pollutant Gas Concentrations

Cited by 37 publications

References 43 publications

Locally Weighted Least Squares Kernel Regression and Statistical Evaluation of Lidar Measurements

Locally Weighted Least Squares Kernel Regression and Statistical Evaluation of Lidar Measurements

Application of Surface Based and Airborne Lidar Systems for Environmental Monitoring

Mapping tracer gas concentrations using a modified Low Third Derivative method: numerical study

Contact Info

Product

Resources

About