Source Localization with One-dimensional Radial Plume Mapping Technique Using Two Monitoring Lines
Date Issued
2010
Date
2010
Author(s)
Lin, Shih-Chun
Abstract
This paper reports the computational simulation and field experimental results by using the OP-FTIR spectroscopy with the 1D-RPM technology to locate the ground-level emission sources. The objective of this study is to improve the 1D-RPM technology by adding one additional monitoring line to reduce the uncertainty of source location results and the distance between the estimated source and the real source location.
The smooth basis function minimization (SBFM) algorithm was used to reconstruct the peak location of the plume. Combining the peak location of downwind concentrations along the monitoring line and the wind data gives the estimated source locations.
In the computational simulation study, we propose using the concept of “error map” to indicate the performance and uncertainty of the two-line 1D-RPM. The error map shows that using two-line 1D-RPM can locate the sources more accurately, and cover wider area than using one monitoring line only. We also found the locating result varied as the proportion of the reconstructed peak locations.
In the field experiment, the distance between the region having highest density of estimated of source location and the real source location (DIST) and the uncertainty area are smaller by using two-line 1D-RPM than original one line 1D-RPM. The DIST is smaller than 40 meter (20 percent of the size of the experimental domain) by using two-line 1D-RPM.
Subjects
source localization
OP-FTIR
1D-RPM
optical remote sensing
emission
air pollutant
Type
thesis
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