In recent years, with the development of science and technology, drone technology has been widely used in various industries. In earthwork measurement, drone technology is becoming a key tool. This article will focus on the knowledge of drone in earthwork measurement.

Nowadays, with the rapid development of technology, drone technology has entered into various fields and become one of the indispensable tools. Especially in earth measurement, the application of drone technology has become a key tool, which has been widely concerned and sought after. In this paper, we will explain in detail the knowledge related to the use of drones in earth surveying from various aspects, so that readers can have a more in-depth understanding of this field.

Taoyuan City Earth Measurement Case

In this case, the task was to calculate the volume of waste to be filled in because there is a piece of land in Lam Hau, in which there is an area that used to be a pit, and in the course of the next few decades, there has been waste dumped in it.

Statement of Problems

• In this case, the accuracy of the estimation was inadequate due to the absence of previous point cloud data.
• There are so many trees in the field that it is not possible to accurately set the orientation points.

Solutions

• We used the point cloud data from the Ministry of the Interior in 1994, but the accuracy was not sufficient due to the technology and equipment at that time.
• Since it is not possible to accurately distribute the localization points evenly, we use RTK localization technique to add some localization points.

Practice Reports

After the aerial survey and 3D modeling, we estimated the volume of the fill and the volume of the excavation.

Application of Drones in Earth Surveying

The application of drones in earth surveying can be mainly categorized into the following aspects:

1. Increased accuracy of measurement area

Traditional earth measurement methods require personnel to enter the site to carry out measurements, subject to the limitations of the site environment, the accuracy and scope of the measurement will be affected. But the drone can fly to carry out the measurement, not subject to the limitations of the field environment, and can realize a higher accuracy of the measurement. In addition, the drone can also be flown several times to conduct comprehensive analysis of the measurement results to improve the accuracy of the measurement.

2. reduce measurement cost and time

Traditional earthwork measurement methods require personnel to enter the site for measurement, which requires a lot of manpower and material resources, is costly and has a long measurement cycle. The drone can fly autonomously to carry out the measurement without human intervention, reducing the cost and time of the measurement.

3. Improved security of measurements

The traditional earth measurement method requires personnel to enter the site for measurement, which has certain safety risks. The drone can fly autonomously to carry out the measurement, which can realize the unattended measurement and improve the safety of the measurement.

Technical Requirements of Drones in Earth Surveying

The following technical requirements are needed to realize the application of UAVs in earth surveying:

1. Positioning techniques

The drone needs to realize high-precision positioning during the measurement process to ensure the accuracy of the measurement. Currently, the commonly used positioning technology mainly includes GPS,Great Bearand laser radar, etc.

2. Remote Sensing Technology

The drone needs to be equipped with remote sensing equipment, such as camera or radar, to realize the shooting and scanning of the measurement area. When selecting remote sensing equipment, factors such as measurement range, resolution, and scanning speed need to be considered.

3. data processing technology

The data obtained from drone surveys need to be processed and analyzed to obtain the final measurement results. The data processing techniques mainly include map making, data analysis and model building.

Application Cases of Drones in Earth Surveying

Cases of drone application in earth measurement have been widely used and the following are some typical applications:

1. Earth survey at construction sites

The drone can realize the measurement of the earth on the construction site and get the volume and distribution of the earth, which provides an important reference for the design and construction of the building.

2. Measurement of road works

The drone can realize the measurement of the road project and get the information of the length, width and height of the road, which provides an important reference for the road design and construction.

3. Environmental monitoring

The drone can realize the monitoring of the environment and get the information of the environment such as temperature, humidity and air quality, which provides a powerful support for environmental monitoring and management.

Conclusion

The application of drone in earth measurement has become an indispensable tool, which can improve the accuracy, scope and efficiency of measurement, and can realize unattended measurement and improve the safety of measurement. In the future, with the further development of technology, the application of drone in earth measurement will continue to expand and deepen.