Details:

Journal Title:
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Personal Author:
Lassiter, H. A. ; Wilkinson, B. ; Gonzalez Perez, A. ; Kelly, C.
Lassiter, H. A. ; Wilkinson, B. ; Gonzalez Perez, A. ; Kelly, C. Less -
NOAA Program & Office:
NOS (National Ocean Service)
Description:
Surveying an area with small, unoccupied aerial systems (UAS) equipped with a lidar mapping payload—absent permanent, stable,

geometrical reference surfaces—demands accurate, repeatable data collection procedures. While relative error within a single UAS

lidar dataset may reveal itself in strip misalignment, absolute error (particularly horizontal error) can prove more difficult to detect,

casting doubt upon the quality of both individual surveys and time change analyses of multiple surveys of the area. To gain insight on

the UAS lidar error budget, this study presents an analysis of multiple UAS lidar surveys over a set of accurately surveyed geometric

checkpoints. Each flight’s trajectory was processed multiple times using multiple static GNSS base observations, both autonomous

and set over surveyed monuments, at varying distances from the study site. Custom algorithms were used to mensurate the geometric

targets detected in each UAS lidar survey's point cloud, allowing for precise comparison of both absolute horizontal and vertical

accuracy of each survey against the rigorous ground survey. The results of the analysis suggest that high horizontal accuracy can be

achieved under a variety of conditions, whereas vertical accuracy is sensitive to the quality of ground control. and a discussion of the

results explores the ultimate goal of isolating and understanding the sources and magnitudes of error in the UAS lidar error budget.


Keywords:
[+]
Accuracy Drones Lidar Targets UAS UAV
Source:
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
DOI:
https://doi.org/10.5194/isprs-archives-XLIV-M-3-2021-105-2021
Document Type:
Journal Article
Funding:
Grant no. NA18NOS400198
Rights Information:
CC BY
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:f38628b731d4f0fb112208a438d7d49a7201e1686cf6df5b4def15e5f2cba94c
Download URL:
https://repository.library.noaa.gov/view/noaa/32977/noaa_32977_DS1.pdf
File Type:

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