Drones Enhance Spatial Science Learning at University of Nebraska-Lincoln
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students in spatial science courses at the University of Nebraska-lincoln (UNL) are gaining hands-on experience with drone technology, extending beyond customary applications to include innovative uses like aerial self-portraits. This integration, led by faculty members Ran Wang and Biquan Zhao, provides students with practical skills in geospatial technology and data collection.
Introducing Drones into the Curriculum
Ran Wang, an assistant professor in the School of Natural Resources, incorporated drones into his Introduction to Geospatial Technology (NRES 218) and GIS for Agriculture and Natural Resources (NRES 415) courses this semester.Alongside Biquan Zhao, a postdoctoral research associate in the Department of Animal Science, they guided approximately 30 students through the process of drone flight planning using a DJI drone’s monitor interface. The students then utilized a high-resolution camera attached to the drone to capture image data,even including themselves in the shots from above.
Lidar Technology and 3D Mapping
Beyond standard image capture, the courses also explored the capabilities of lidar sensors. Students observed how attaching a lidar sensor to a drone allowed for the creation of holographic-like representations of trees and structures.Lidar technology functions by emitting laser pulses towards the ground. By measuring the time it takes for these lasers to return, the drone can accurately determine the three-dimensional structure of objects and terrain.
How Lidar Works
Lidar (Light detection and ranging) is a remote sensing method that uses light in the form of a pulsed laser to measure ranges (distances) to the Earth. These light pulses-combined with other data recorded by the airborne system-generate precise, three-dimensional information about the shape and characteristics of earth surfaces. This data is invaluable for creating detailed maps and models.
Practical Applications and Future Learning
Zhao continued the instruction by visiting the introductory class to further demonstrate the practical applications of these technologies. This hands-on approach allows students to develop a strong understanding of geospatial data acquisition and analysis, preparing them for careers in fields such as environmental science, agriculture, and urban planning.
Key Takeaways
- Drones are being integrated into spatial science education at UNL.
- Students are learning to plan drone flights and collect image data.
- Lidar technology is being used to create 3D models of the environment.
- This practical experience prepares students for careers in geospatial fields.