A New Systematic Framework for Optimization of Multi-Temporal Terrestrial LiDAR Surveys over Complex Gully Morphology
نویسندگان
چکیده
Terrestrial LiDAR scanning (TLS) has in preceding years emerged as one of the most accurate and reliable geospatial methods for creation very-high resolution (VHR) models over gullies other complex geomorphic features. Rough terrain morphology rapid erosion induced spatio-temporal changes (STCs) can lead to significant challenges multi-temporal field TLS surveys. In this study, we present a newly developed systematic framework optimization terrestrial surveys through implementation thorough pre-survey planning preparation phases. The is aimed at increase accuracy repeatability surveys, where optimal positions are determined based on visibility analysis. whole process selection was automated with positioning tool (TPT), which allows user adjust parameters analysis local characteristics specifications available laser scanners. Application validation were carried out gully Santiš (1226.97 m2), located Pag Island (Croatia). Eight by TPT tool, from planned coverage included almost 97% area 99.10% headcut morphology. order validate performance applied framework, December 2019 2020 using Faro Focus M70 TLS. Field have confirmed reliability (>95%) achieved. Shadowing effects within overhangs deeply incised sub-channels successfully minimalized, thus allowing detection quantification STCs. Detection intensive STCs observed one-year period chosen part headcut. Most detected related mass collapse gradual uphill retreat headcut, total 2.42 m2 soil been eroded. significantly facilitated raising both their repeatability. Therefore, it great potential further application features required monitoring different
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ژورنال
عنوان ژورنال: Remote Sensing
سال: 2022
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs14143366