Drone technology has revolutionized land surveying, offering enhanced efficiency, safety, and accuracy. For licensed land surveyors, integrating drones into your practice can streamline workflows and provide clients with superior deliverables.
This blog provides an in-depth guide on how licensed land surveyors can use drones for professional surveys. From understanding their applications to exploring their benefits and practical considerations, this guide aims to help surveyors integrate this advanced technology into their workflow.
What is Drone Surveying?
Drone surveying utilizes unmanned aerial vehicles (UAVs) equipped with various sensors—such as high-resolution cameras, LiDAR, and GPS—to collect aerial data. This data is processed into detailed maps, 3D models, and other geospatial products.
Key Steps in Drone Surveying
To maximize the effectiveness of drone surveying, adhere to the following steps:
- Flight Planning
Surveyors design a precise flight path using drone mapping software. This ensures the entire site is covered, considering altitude, speed, and terrain.
- Data Capture
The drone records georeferenced imagery and other sensor data while following its pre-planned course. Sensors such as LiDAR or multispectral cameras are often used for more specialized insights.
- Data Processing
After the drone completes its flight, the collected data is imported into specialized software, such as Pix4D or DroneDeploy. This software processes and converts the raw data into outputs like 3D models, contour maps, and elevation profiles.
- Analysis and Reporting
Surveyors analyze the processed data, verify its accuracy, and compile reports for clients or internal use. The outputs can be integrated with GIS platforms or CAD software for further analysis.
Benefits of Drone Surveying for Land Surveyors
Enhanced Efficiency
Traditional land surveys can take days or even weeks to complete, depending on the size and complexity of the site. Drones can perform the same tasks in hours, significantly reducing time spent in the field.
Improved Accuracy and Precision
Equipped with advanced GPS and high-resolution sensors, drones capture data with remarkable accuracy. For example, LiDAR-equipped drones can achieve centimeter-level precision, making them invaluable for detailed projects like topographic surveys or boundary assessments.
Safe Surveying of Difficult Terrain
Surveying hazardous environments, such as steep slopes, dense forests, or active construction sites, becomes far safer with drones. They cut risks to surveyors by digitally capturing hard-to-reach areas.
Cost Savings
Using a drone can reduce labor and equipment costs associated with traditional surveying methods. With reduced field time, surveyors can take on more projects, optimizing operations and revenue.
Applications of Drones in Land Surveying
1. Topographic Surveys
Drones provide accurate topographic information for project planning and development. Using orthomosaic maps and elevation models, surveyors can analyze terrain with exceptional detail.
2. Boundary Surveys and Legal Mapping
By capturing high-resolution aerial imagery, drones can assist surveyors in verifying property lines. These images, when combined with cadastral data, streamline the boundary retracement process.
3. Volumetric Analysis
Surveying mine sites, quarries, or excavation areas is simplified with drones. Volume calculations obtained from 3D models help in inventory management and project planning.
4. Construction Monitoring
Regular drone surveys can be conducted to monitor construction progress, identify discrepancies, and ensure compliance with design plans.
5. Environmental Surveys
Drones equipped with multispectral or thermal cameras can analyze vegetation, measure soil erosion, or track changes in land use for environmental assessments.
Legal Considerations for Drone Surveying
While drones can be helpful, they must be used in accordance with local laws and regulations.
In the United States, drone operations are regulated by the Federal Aviation Administration (FAA). To conduct commercial drone operations, including surveying, operators must obtain a Remote Pilot Certificate under Part 107 of the FAA regulations.
This certification ensures that drone pilots are knowledgeable about airspace rules, weather conditions, and emergency procedures.
It’s important to note that while the FAA regulates drone operations, land surveying is a licensed profession governed by state laws. In some states, performing certain surveying tasks with drones may require a licensed land surveyor.
For instance, a federal appeals court upheld a decision that a North Carolina drone pilot could not offer mapping services without a state surveyor’s license. (Drone pilot can’t offer mapping without North Carolina surveyor’s license, court says)
Therefore, licensed surveyors must ensure they comply with both FAA regulations and state-specific licensing requirements when incorporating drones into their services.
Become a Drone Surveying Expert
The integration of drones into the land surveying field represents a significant leap forward in efficiency and innovation. However, mastering this technology requires more than the right equipment – it calls for proper training and a deep understanding of drone applications.
Take the first step toward drone expertise by enrolling in McKissock Learning’s specialized course in drone surveying for land surveyors. This comprehensive class covers all the essentials, including the advantages and limitations of drones, their uses, and when they are just not the right tool for the job
Register for this specialized Land Surveyor CE course today and discover how drones can be used in your career.
