Amphibious Uncrewed Ground Vehicle for Coastal Surfzone Survey
Abstract
The capability of a commercial off-the-shelf amphibious bottom crawling robot is explored for surveying seamless topography and bathymetry across the beachface, surfzone, and very nearshore. A real-time-kinematic (RTK) antenna on a mast was added to the robotic platform, a Bayonet-350 (previously the C2i SeaOx). Data collected from the robot were compared with those collected by the Coastal Research Amphibious Buggy (CRAB) and the Lighter Amphibious Resupply Cargo (LARC), unique amphibious vessels capable of collecting seamless topography and bathymetry in use for decades at the US Army Engineer Research and Development Centers Field Research Facility (FRF). Data were compared on five different days in a range of wave conditions (Hs less than 1 m in 8-m depth) resulting in a root-mean square difference of 8.7 cm and bias of 2 cm for 24 different cross-shore profile comparisons. Additionally, a repeatability test was performed to assess measurement uncertainty. The repeatability test indicated a total vertical uncertainty (TVU) of 5.8 cm, with the highest spatial error at the shoreline.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2024
- Accession Number
- AD1219352
Entities
People
- A. Spicer Bak
- Brittany L. Bruder
- Katherine Brodie
- Matthew J. Saenz
- Michael F. Forte
- Patrick Durkin
Organizations
- Engineer Research and Development Center