RTK (Real-Time Kinematic) positioning is a technology used on professional drones to dramatically improve positional accuracy. It is most commonly used for surveying, mapping, inspection, and evidence-grade data capture, where standard GPS accuracy is not sufficient.

This article explains RTK in plain English, covers how it works, when it is actually needed, and the differences between D-RTK 2, D-RTK 3, Network RTK (NTRIP), and PPK.

Without RTK, most drones rely on standard GNSS (GPS, Galileo, etc.), which typically gives positional accuracy of around 1–3 metres.

With RTK enabled and working correctly, accuracy improves to approximately:

RTK achieves this by comparing the drone's satellite data to a known reference point (base station or correction network) and applying real-time corrections.

A simple way to think about it:

GPS only: "You're somewhere on this street."
GPS + RTK: "You're standing on this exact paving slab."

Satellite positioning can be affected by atmospheric interference, signal delays, reflections from buildings and structures, and satellite geometry and availability. The result is small errors in position. Those might not matter for filming, but they absolutely matter when you are creating maps for clients, measuring distances, areas or volumes, comparing data over time, or providing professional reports.

RTK is most valuable when the user needs:

RTK is usually not required for:

Many users believe RTK is always required. In reality, it is only essential when positional accuracy matters. For operators who are paid specifically for data quality, RTK usually pays for itself by reducing rework.

Important: if the system does not show RTK FIX, you are not receiving RTK accuracy, even if RTK is enabled.

DJI's older base station used with platforms such as:

How it works: the base station is placed on the ground and sends corrections directly to the drone. No internet is required once set up.

Best for remote sites, areas with poor mobile data, and teams who want full control over positioning.

DJI's newer RTK base station designed for newer platforms such as the Matrice 4 Series, Matrice 400 and Dock 3 ecosystems.

Improvements over D-RTK 2: supports more satellite constellations, faster convergence to RTK FIX, more robust signal stability, and designed for modern enterprise workflows.

This uses an internet-based correction service rather than a physical base station. The controller connects to a correction network over mobile data, and corrections are streamed from permanent ground stations.

Pros: no hardware to carry, fast setup, excellent accuracy when coverage is good.

Cons: requires reliable internet, not available everywhere, and some services require paid subscriptions.

PPK is different from RTK because corrections are applied after the flight, not during. The drone and the base station each log raw satellite data, and the two are combined later in processing software.

Best for survey professionals, workflows where absolute accuracy is critical, and situations where a live RTK signal is unreliable. Many Wingtra and specialist mapping workflows rely heavily on PPK.

A large number of complaints about "bad accuracy" come from users who believed RTK was working when the system was actually in FLOAT or NONE.

For step-by-step setup instructions, see our separate article on setting up RTK for DJI drones.

Not always. RTK significantly improves accuracy, but some projects, especially high-precision or contractual survey work, may still require GCPs depending on client requirements, project tolerances, QA/QC processes and the industry standards being followed. RTK improves your baseline accuracy; GCPs can still be used to validate or further refine it.

RTK improves positioning accuracy, but it does not fix poor mission planning, motion blur, flying too fast, low image overlap, bad lighting, poor GCP placement or incorrect processing settings. RTK improves where the data is positioned, not the quality of the imagery itself.

Two other common misunderstandings: RTK must be actively configured and connected before each mission, so supporting RTK is not the same as getting RTK accuracy; and understanding capture workflows still matters, so RTK does not remove the need for training.

For many other users (basic inspection, photography), RTK adds cost and complexity without real benefit. If you are unsure whether RTK is worth it for your operation, or comparing aircraft and workflows, get in touch and we will talk it through.