Overview

UAV flight-path mapping requires an understanding of how many people live beneath planned UAV or drone routes. This visibility is essential for risk management, regulatory compliance, and community engagement. Population Explorer (PopEx) provides two flexible workflows for calculating population exposure under UAV flight paths—either by importing an existing KML/KMZ route or by creating a buffered line directly within the app.

Using high-resolution datasets such as WorldPop and LandScan, PopEx quantifies the number of people potentially exposed along a route corridor, allowing operators to evaluate alternative paths, refine buffer distances, and document results for submission. Humanitarian response teams share similar priorities: locate vulnerable populations and prepare risk management strategies.

Scenario Example

A UAV operations team in Ghana is testing a new 30 km corridor between Kumasi and Obuasi. To estimate population exposure, they model two routes: one imported from flight-planning software and another drawn directly in PopEx using buffered line tools. Within minutes, both methods produce comparable estimates—showing how many people live within 250 meters of each corridor.

Step-by-Step: Measuring Population under UAV Routes

Option A — Import an Existing Flight Path

1. Prepare your UAV route as a KML or KMZ line file from your flight planning system.

2. In PopEx, open your working project and go to File → Import KML/KMZ.

3. Select the imported line item in the left drawer.

4. Click New → Create Item → Buffer around Line to define a corridor along the imported route. Enter your desired buffer radius (e.g., 100 m, 250 m, or 500 m).

5. Open Layers → Settings and select your population dataset (WorldPop 2024+ or LandScan 2023).

6. Click the buffered corridor to view Population Total, Density, and Income metrics.

7. Export results with Export → Excel to include in your risk or compliance documentation.

Option B — Draw a Flight Path Directly in PopEx

1. In the main toolbar, choose New → Create Item → Buffered Line.

2. Click on the map to place the start and end points of your route. PopEx draws a line segment connecting them.

3. Set the buffer radius (e.g., 250 m) to represent your UAV corridor width.

4. Click Add to create the buffered corridor polygon.

5. Open the item’s summary panel to review Population Total and Density along the corridor.

6. Export your data with Export → Excel or Export → KML for documentation or visualization.

Interpreting the Results

PopEx’s outputs represent the estimated number of people living within the buffered corridor. For UAV planners, this defines the ground exposure footprint of a route—how many people are directly below or adjacent to the flight area. These estimates help identify low-risk routes, justify regulatory submissions, and model potential public exposure.

Best Practices

• Use smaller buffer distances for high-altitude or low-risk flights; increase for low-altitude routes or larger UAVs.

• Test multiple corridor widths to evaluate sensitivity to buffer size.

• Verify your route alignment visually before exporting to prevent coordinate drift.

• Record assumptions about altitude, corridor radius, and flight duration when submitting documentation.

Example Applications

Verification

Cross-check your buffer alignment on the map to ensure it follows the correct flight corridor. For imported KMLs, confirm that coordinate systems are in WGS 84. Compare results from both workflows to confirm consistent population totals across methods.

Next Steps

• Exporting Polygons for UAV Compliance

• Evaluating Population Risk Zones for UAV

Need More Help?

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