lidar: Data from a lidar ranging experiment
In dereksonderegger/dsData: Datasets for Teaching
Description
Usage
Format
Details
References
Description
The observations from a light detection and ranging (LIDAR) experiment. LIDAR
uses the reflection of laser-emitted light to detect chemical compounds in the
atmosphere. This technique is used in monitoring many atmospheric pollutants of
importance. In this experiment, one laser source has a frequency tuned to the
resonance frequency of mercury, while the second laser had a different frequency.
Usage
1
Format
A data frame with 221 observations of 2 variables.
- range
The distance travelled before the light is reflected back to its source.
- logratio
The logarithm of the ratio of received light from the two laser sources.
Details
The horizonatal variable is range, while the response variable is logratio
which is the log ratio of the light from the different lasers. If mercury is
present at a particular range, then the light from the laser tuned to the
mercury frequency should be absorbed and the ratio of light from the two
lasers observed in the receiver should drop. Of primary interest is
inflection point where the ratio drops from approximately equal from the two
sources, to being dominated by just one source (the non-mercury tuned frequency).
References
Sigrist, M. (Ed.) (1994). Air Monitoring by Spectroscopic Techniques (Chemical Analysis Series, vol. 197). New York: Wiley.
Holst, U., Hossjer, O., Bjorklund, C., Ragnarson, P., and Edner, H. (1996). Locally weighted least squares kernel regression and statistical evaluation of LIDAR measurements. Environmetrics 7: 401-416.
Ruppert, D., Wand, M.P. and Carroll, R.J. (2003) Semiparametric Regression Cambridge University Press.
dereksonderegger/dsData documentation built on Nov. 22, 2020, 5:15 p.m.
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Description Usage Format Details References
Description
The observations from a light detection and ranging (LIDAR) experiment. LIDAR uses the reflection of laser-emitted light to detect chemical compounds in the atmosphere. This technique is used in monitoring many atmospheric pollutants of importance. In this experiment, one laser source has a frequency tuned to the resonance frequency of mercury, while the second laser had a different frequency.
Usage
1 |
Format
A data frame with 221 observations of 2 variables.
- range
The distance travelled before the light is reflected back to its source.
- logratio
The logarithm of the ratio of received light from the two laser sources.
Details
The horizonatal variable is range, while the response variable is logratio
which is the log ratio of the light from the different lasers. If mercury is
present at a particular range, then the light from the laser tuned to the
mercury frequency should be absorbed and the ratio of light from the two
lasers observed in the receiver should drop. Of primary interest is
inflection point where the ratio drops from approximately equal from the two
sources, to being dominated by just one source (the non-mercury tuned frequency).
References
Sigrist, M. (Ed.) (1994). Air Monitoring by Spectroscopic Techniques (Chemical Analysis Series, vol. 197). New York: Wiley.
Holst, U., Hossjer, O., Bjorklund, C., Ragnarson, P., and Edner, H. (1996). Locally weighted least squares kernel regression and statistical evaluation of LIDAR measurements. Environmetrics 7: 401-416.
Ruppert, D., Wand, M.P. and Carroll, R.J. (2003) Semiparametric Regression Cambridge University Press.
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Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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