Reach-scale mapping of surface flow velocities from thermal images acquired by an uncrewed aircraft system along the Sacramento River, California, USA
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Abstract
An innovative payload containing a sensitive mid-wave infrared camera was flown on an uncrewed aircraft system (UAS) to acquire thermal imagery along a reach of the Sacramento River, California, USA. The imagery was used as input for an ensemble particle image velocimetry (PIV) algorithm to produce near-continuous maps of surface flow velocity along a reach approximately 1 km in length. To assess the accuracy of PIV velocity estimates, in situ measurements of flow velocity were obtained with an acoustic Doppler current profiler (ADCP). ADCP measurements were collected along pre-planned cross-section lines within the area covered by the imagery. The PIV velocities showed good agreement with the depth-averaged velocity measured by the ADCP, with
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Reach-scale mapping of surface flow velocities from thermal images acquired by an uncrewed aircraft system along the Sacramento River, California, USA |
| Series title | Water |
| DOI | 10.3390/w16131870 |
| Volume | 16 |
| Issue | 13 |
| Year Published | 2024 |
| Language | English |
| Publisher | MDPI |
| Contributing office(s) | New York Water Science Center, WMA - Observing Systems Division |
| Description | 1870, 17 p. |
| Google Analytic Metrics | Metrics page |