| Title | A UAV-based sensor system for measuring land surface albedo: tested over a boreal peatland ecosystem |
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| Author | Canisius, F; Wang, S ; Croft, H; Leblanc, S G; Russell, H A J; Chen, J; Wang, R |
| Source | Drones vol. 3, issue 1, 27, 2019 p. 1-20, https://doi.org/10.3390/drones3010027  Open Access |
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| Year | 2019 |
| Alt Series | Natural Resources Canada, Contribution Series 20190166 |
| Publisher | MDPI AG |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf; html |
| Subjects | geophysics; surficial geology/geomorphology; environmental geology; Nature and Environment; Science and Technology; remote sensing; photogrammetric surveys; satellite imagery; peatlands; ecosystems;
spectral analyses; in-field instrumentation; drones; Boreal ecosystems |
| Illustrations | photographs; spectra; flow diagrams; location maps; tables; schematic representations; 3-D images; plots; time series; bar graphs; satellite images |
| Program | Remote Sensing Science |
| Released | 2019 03 16 |
| Abstract | A multiple sensor payload for a multi-rotor based UAV platform was developed and tested for measuring land surface albedo and spectral measurements at user-defined spatial, temporal, and spectral
resolutions. The system includes a Matrice 600 UAV with an RGB camera and a set of four downward pointing radiation sensors including a pyranometer, quantum sensor, and VIS and NIR spectrometers, measuring surface reflected radiation. A companion
ground unit consisting of a second set of identical sensors simultaneously measure downwelling radiation. The reflected and downwelling radiation measured by the four sensors are used for calculating albedo for the total shortwave broadband, visible
band and any narrowband at a 1.5 nm spectral resolution within the range of 350-1100 nm. The UAV-derived albedo was compared with those derived from Landsat 8 and Sentinel-2 satellite observations. Results show the agreement between total shortwave
albedo from UAV pyranometer and Landsat 8 (R2 = 0.73) and Sentinel-2 (R2 = 0.68). Further, total shortwave albedo was estimated from spectral measurements and compared with the satellite-derived albedo. This UAV-based sensor system promises to
provide high-resolution multi-sensors data acquisition. It also provides maximal flexibility for data collection at low cost with minimal atmosphere influence, minimal site disturbance, flexibility in measurement planning, and ease of access to study
sites (e.g., wetlands) in contrast with traditional data collection methods. |
| GEOSCAN ID | 315323 |
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