Real-time GNSS correction designed for precise Astro and Alta X workflows

RTK technology improves positioning accuracy by pairing a fixed reference station with an airborne rover. The Freefly RTK GPS Ground Station functions as the reference module, mounting to a tripod and connecting to a ground station computer via USB.

During flight operations, it transmits correction data that refines Freefly Astro and Alta X’s GNSS solution in real time. This process significantly reduces positional error, supporting missions that demand precise location control beyond standard GPS performance.

Field-ready hardware built for professional deployment

Designed and assembled in the United States, the Freefly RTK GPS Ground Station is engineered for practical field use. The included multiband antenna, magnetic mounting hardware, and cabling support fast setup on common tripods.

Integrated components such as a magnetometer, barometer, safety switch, and LED indicators provide operational feedback and system awareness. For Astro operators seeking dependable GNSS accuracy improvements without unnecessary complexity, this ground station delivers a focused, purpose-built solution.

Compatibility and system integration

• Designed for use with Freefly Astro and Alta X RTK configurations.
• Functions as the RTK reference station for Astro and Alta X operations.
• Requires radio communication between ground station computer and aircraft.
• Ground station computer and radio hardware not included.
• Compatible with supported Astro and Alta X firmware and software environments.

Operational scenarios and use cases

• Precision navigation: improved positional control during complex flight paths.
• Mapping workflows: stabilized GNSS performance for repeatable survey missions.
• Inspection missions: enhanced accuracy near infrastructure and terrain features.
• Research operations: controlled positioning for test and validation flights.
• Industrial operations: reduced positional drift during extended missions.
• Training environments: predictable GNSS behavior for advanced pilot training.
• General GNSS enhancement: improved accuracy without full network RTK systems.
• Accuracy-critical operations: reliable positioning where standard GPS is insufficient.

Designed for enterprise integration

The Freefly RTK GPS Ground Station is built to integrate cleanly into professional Astro workflows, providing a scalable path to improved GNSS accuracy. Its modular architecture allows operators to deploy RTK capability as mission requirements evolve. With standardized mounting, domestic assembly, and clearly defined functionality, the system supports consistent, repeatable performance for enterprise drone operations.

The Freefly RTK GPS Ground Station delivers a practical upgrade path to centimeter-level positioning for Astro and Alta X operators requiring precise GNSS performance. Purpose-built hardware and real-time correction support accuracy-critical missions with confidence.

Application 

This kit comes with one module, magnetic mounting hardware for common tripods (1/4″ 20), and a USB cable.* Here’s what you will need if you have:

1. An Alta X** with F9P GPS (not Here2) and you want full RTK capability:

• One RTK GPS Ground Station for your ground station computer***
• A radio to communicate between the ground station computer** and the Alta (FRX Pro, etc)
• A tripod*** or something sturdy to mount your Ground Station module to with the included magnetic adapter

2. An Alta X* with Here2 GPS, and you want fully RTK capability:

• Two RTK GPS Ground Stations (one GPS module functions for your Rover and one for the ground station computer***)
• A radio to communicate between the ground station computer*** and the Alta (FRX Pro, etc)
• A tripod***  or something sturdy to mount your Ground Station module to with the included magnetic adapter

3. An Alta X* with Here2 GPS, and you just want increased GPS performance:

• One RTK GPS Ground Station for your Alta X

4. Any Astro, and you want full RTK capability:

• One RTK GPS Ground Station for your ground station computer***
• A tripod*** or something sturdy to mount your Ground Station module to with the included magnetic adapter

*If your computer (MacBook Pro, etc) does not have USB A ports, you will need a USB A-C adapter or your own USB C-C cable. 

**DIU Blue and NDAA Versions of Alta X are not compatible with our RTK due to lack of connectivity through the RFD900 radio link.

***Ground station computer, FRX Pro, nor tripod with 1/4 20 connector are not included with this product.