Validation of the Geometric Accuracy of Airborne Light Detection and Ranging Data for Eastern Iowa, 2019
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- Document: Report (3.15 pdf) , HTML , XML
- Data Release: USGS data release - 2019 Eastern Iowa topographic lidar validation – USGS field survey data
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Abstract
A geometric accuracy assessment of lidar data collected in eastern Iowa in 2019 as part of the 3D Elevation Program (3DEP) was conducted. The assessment involved evaluating interswath accuracy, same surface precision, point density, absolute accuracy, and consistency with adjacent 3DEP datasets. The results demonstrate that the data meet or exceed the quality level 2 specifications outlined in the Lidar Base Specifications (LBS). Interswath and same surface precision values were within specified tolerances, with a root mean square difference of 0.03 meters for interswath vertical accuracy and 0.03 meters for same surface precision. Vertical accuracy in flat areas was excellent, with root mean square error values consistently below 0.10 meters. Horizontal accuracy assessments also showed good agreement between lidar and reference data. Point density generally exceeded the minimum requirement of 2 points per square meter, and the inter-project consistency assessment indicated good agreement between the Iowa lidar data and adjacent datasets.
Suggested Citation
Sampath, A., Irwin, J., and Kropuenske, T., 2025, Validation of the geometric accuracy of airborne light detection and ranging data for eastern Iowa, 2019: U.S. Geological Survey Open-File Report 2025–1017, 16 p., https://doi.org/10.3133/ofr20251017.
ISSN: 2331-1258 (online)
Study Area
Table of Contents
- Abstract
- Introduction
- Methods
- Results
- Discussion
- Conclusions
- References Cited
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Validation of the geometric accuracy of airborne light detection and ranging data for eastern Iowa, 2019 |
| Series title | Open-File Report |
| Series number | 2025-1017 |
| DOI | 10.3133/ofr20251017 |
| Publication Date | June 02, 2025 |
| Year Published | 2025 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | Report: v, 16 p.; Data Release |
| Country | United States |
| State | Iowa |
| Online Only (Y/N) | Y |
| Additional Online Files (Y/N) | N |