This data was generated from a hard ground target with a mirror angle close to nadir
and its corresponding outgoing waveform. Generally one study site only need one system impulse which is
mainly for calibration purpose.

datasets

A wealth of Full Waveform (FW) Light Detection and Ranging (LiDAR) data are available to
the public from different sources, which is poised to boost the extensive
application of FW LiDAR data. However, we lack a handy and open source tool
that can be used by ecological and remote sensing communities for processing and analyzing FW LiDAR
data. To this end, we introduce 'waveformlidar', an R package dedicated to
FW LiDAR processing, analysis and visualization as a solution to the constraint.
Specifically, this package provides several commonly used waveform processing methods
such as Gaussian, adaptive Gaussian and Weibull decompositions, and
deconvolution approaches (Gold and Richard-Lucy (RL)) with customized settings.
In addition, we also develop some functions to derive commonly used waveform metrics
for characterizing vegetation structure. Moreover, a new way to directly visualize
FW LiDAR data is developed through converting waveforms into points to form the Hyper
Point cloud (HPC), which can be easily adopted and subsequently analyzed with existing
discrete-return LiDAR processing tools such as 'LAStools' and 'FUSION'. Basic explorations of
the HPC such as 3D voxelization of the HPC and conversion from original waveforms to
composite waveforms are also available in this package. All of these functions are
developed based on small-footprint FW LiDAR data, but they can be easily transplanted to
the large footprint FW LiDAR data such as Geoscience Laser Altimeter System (GLAS)
and Global Ecosystem Dynamics Investigation (GEDI) data analysis. References: Zhou et al. (2017a) <doi:10.1016/j.isprsjprs.2017.04.021>;
Zhou et al. (2017b) <doi:10.1016/j.rse.2017.08.012>; Zhou et al. (2018a) <doi:10.3390/rs10010039>;Zhou et al. (2018b) <doi:10.3390/rs10121949>.

Tan Zhou

waveformlidar

Waveform LiDAR Data Processing and Analysis

imp function

A data frame with 100 rows and 1 column.<dl class="dl-horizontal">
 <dt>V1</dt><dd>The intensity of the system impulse</dd>
</dl>

Format

prototype system impulse — imp

A data frame with 100 rows and 1 column.<dl class='dl-horizontal'>
 <dt>V1</dt><dd>The intensity of the system impulse</dd>
</dl>

imp: prototype system impulse

Description

Usage

Arguments

Format