RESEARCH DATA DEPOSIT
Consumer-grade UAV solid-state LiDAR accurately quantifies topography in a vegetated fluvial environment

Authors:
Craig John MacDonell*, Richard David Williams, Georgios Maniatis, Kenny Roberts, Mark Naylor
Corresponding author: Craig MacDonell, Craig.MacDonell@glasgow.ac.uk

To accompany a journal article in Earth Surface Processes & Landforms (ESPL) which details an investigation into the use of the DJI L1 solid-state UAV LiDAR system at both a test location (Garscube Sports Fields, Glasgow, Scotland) and also in a geomorphic environment (a reach of the River Feshie, Highlands, Scotland).
Article DOI: https://onlinelibrary.wiley.com/doi/10.1002/esp.5608 
Data DOI: http://dx.doi.org/10.5525/gla.researchdata.1433

Research Funding:
NERC NE/S003312/1 & NE/T005920/1, Carnegie Research Incentive Grant RIG007856, NERC Geophysical Equipment Facility Loan 1118

Acknowledgements:
The authors would also like to acknowledge field assistance by Geoffrey Hope-Thomson and also thank Glenfeshie Estate for their ongoing support of our fieldwork. University of Glasgow Sport is thanked for allowing access to the sports field facilities.

Field Site Locations (approximate latitude & longtiude):
	- Garscube (Glasgow, Scotland)
		- 55° 54’ 13.18” N; 4° 18’ 49.52” W
	- Feshie (Highlands, Scotland)
		- 57° 01’ 14” N; 3° 54’ 10” W

Dataset details:

- Point Clouds (.las file format)

	- Garscube (x4 - please see journal article Table 1 for details of flight parameters)
	     - raw point clouds, unthinned
             - processed in DJI Terra to produce .las files & TerraSolid to convert into OSGB36(15) British National Grid (EPSG: 27700) coordinate system & Ordnance Datum Newlyn (EPSG: 5401). Clipped using lasclip (LASTools) to wider area of interest, see red border in Figure 1b of journal article
             - see journal article, Figure 2, left column, second box down from top for processing stage

	- Feshie (x6 - please see journal article Table 1 for details of flight parameters - flights numbered from north to south)
	     - thinned point clouds, 15cm density
	     - processed in DJI Terra (.las production), TerraSolid (coordinates as above with Garscube & flight line overlap thinning) & ArcGIS Pro (Thin LAS to 15cm XYZ)
             - see journal article, Figure 2, left column, "Point Cloud Thinning Stage 2" for processing stage

	- TLS (x7 TLS setups across River Feshie reach - not in full geographic order, see XY coordinate for approximate location of each cloud below)
	     - georeferenced TLS point clouds
	     - clipped to unvegetated, dry river gravel areas within limits of measured control prism targets
             - see journal article, Figure 2, right column, second box down from top for processing stage
	     - OSGB36(15) British National Grid (EPSG: 27700) coordinate system & Ordnance Datum Newlyn (EPSG: 5401)
		- TLS 1; Easting 284515.103, Northing 791801.485 
		- TLS 2; E 284391.213, N 792360.877
		- TLS 3; E 284291.395, N 792847.250
		- TLS 4; E 284569.575, N 793696.470
		- TLS 5; E 284943.754, N 794030.260
		- TLS 6; E 284839.832, N 794484.556
		- TLS 7; E 284514.452, N 793329.874

- GNSS Points (.txt tab delimted format)

	- Garscube
	     - 74 GNSS Points with Easting (X), Northing (Y) and Orthometric Height (Z). 
             - Additional fields of spike corrected orthometric height (+ 3cm; penetration into football pitch surface), Leica GNSS Coordinate Quality (CQ) for 3D (XYZ), 2D (XY) & 1D (Z), Standard Deviation of GNSS measurements (E,N & Z), and Point Type (GCP or Football Marking)
	     - OSGB36(15) British National Grid (EPSG: 27700) coordinate system & Ordnance Datum Newlyn (EPSG: 5401)

	- Feshie
	     - 2049 GNSS Points with Easting (X), Northing (Y) and Orthometric Height (Z). 
             - Additional fields of Leica GNSS Coordinate Quality (CQ) for 3D (XYZ), 2D (XY) & 1D (Z), Standard Deviation of GNSS measurements (E,N & Z), Geoid/Ellipsoid Separation, Instrument ID, and Point Type (GCP, TLS Grid, RiverGravel, Road & various vegetation types)
		- note that some fields are not complete for all points (e.g. Standard Deviation & Instrument ID)
	     - OSGB36(15) British National Grid (EPSG: 27700) coordinate system & Ordnance Datum Newlyn (EPSG: 5401)

- Digital Elevation Model (raster .tif format)

	- final River Feshie DEM (see detrended version in Figure 10 of journal article).
	     - absolute heights, not detrended
	     - 20 cm pixel size
	     - OSGB36(15) British National Grid (EPSG: 27700) coordinate system & Ordnance Datum Newlyn (EPSG: 5401)
             - Default Multiscale Curvature Classification (MCC) used for ground point classification, only ground points used in interpolation
             - Default Topo to Raster interpolation (ArcGIS Pro) - no drainage enforcement


Requests for additional data from other processing stages can be made via email the corresponding author.