Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 541092
Title Quality of terrestrial data derived from UAV photogrammetry : A case study of Hetao irrigation district in northern China
Author(s) Zhang, Hongming; Yang, Jiang Tao; Baartman, Jantiene E.M.; Li, Shu Qin; Jin, Bei; Han, Wen Ting; Yang, Xiaomei; Gai, Lingtong; Ritsema, Coen J.; Geissen, Violette
Source International Journal of Agricultural and Biological Engineering 11 (2018)3. - ISSN 1934-6344 - p. 171 - 177.
DOI https://doi.org/10.25165/j.ijabe.20181103.3012
Department(s) WIMEK
Soil Physics and Land Management
PE&RC
Alterra - Soil, water and land use
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Accuracy evaluation - DEM - GIS - Irrigation area - Photogrammetry - UAVs
Abstract

Most crops in northern China are irrigated, but the topography affects the water use, soil erosion, runoff and yields. Technologies for collecting high-resolution topographic data are essential for adequately assessing these effects. Ground surveys and techniques of light detection and ranging have good accuracy, but data acquisition can be time-consuming and expensive for large catchments. Recent rapid technological development has provided new, flexible, high-resolution methods for collecting topographic data, such as photogrammetry using unmanned aerial vehicles (UAVs). The accuracy of UAV photogrammetry for generating high-resolution Digital Elevation Model (DEM) and for determining the width of irrigation channels, however, has not been assessed. A fixed-wing UAV was used for collecting high-resolution (0.15 m) topographic data for the Hetao irrigation district, the third largest irrigation district in China. 112 ground checkpoints (GCPs) were surveyed by using a real-time kinematic global positioning system to evaluate the accuracy of the DEMs and channel widths. A comparison of manually measured channel widths with the widths derived from the DEMs indicated that the DEM-derived widths had vertical and horizontal root mean square errors of 13.0 and 7.9 cm, respectively. UAV photogrammetric data can thus be used for land surveying, digital mapping, calculating channel capacity, monitoring crops, and predicting yields, with the advantages of economy, speed and ease.

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