How to Place Ground Control Points (GCPs) for Precise Drone Mapping

If you're planning to conduct precise drone mapping, it's essential to prepare Ground Control Points (GCPs) for your project. In this video, we'll explain what GCPs are and how to correctly place them for accurate results. GCPs are identifiable spots with known coordinates used to anchor your photogrammetric data to the coordinate system you're working with. Even if you're using PPK or RTK-equipped drones, GCPs remain crucial to ensuring the accuracy of your project.

We'll guide you through the basic rules of placing GCPs, including how to distribute them evenly across your site, the importance of visibility, and how to measure their positions using RTK or PPK-capable GNSS receivers. Whether you're a beginner or experienced in drone surveying, this step-by-step tutorial will help you achieve the best results in your mapping projects.

RTK over LoRA Radio: [ Ссылка ]
RTK over NTRIP: [ Ссылка ]

00:00 - Introduction
00:19 - What GCP is
00:52 - Requirements for GCPs
01:11 - Basic Rules of Placing GCPs
01:58 - Measuring GCP’s position
04:00 - Exporting GCPs’ coordinates

Emlid Flow in App Store: [ Ссылка ]
Emlid Flow in Google Play: [ Ссылка ]

Learn more about Reach receivers: [ Ссылка ]
Guides for Emlid receivers and software: [ Ссылка ]

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