Product Information
Description
The Hemisphere GNSS S631 is a multi-frequency, multi-constellation GNSS smart antenna that delivers reliable performance and high positioning accuracy in a compact and rugged design. Featuring multiple wireless communication interfaces and an open GNSS architecture, the S631 can operate in a variety of configurations.
It can be used as a high-precision RTK base station, transmitting correction data to existing rover networks, or as a lightweight and portable RTK rover, connecting to a base station via UHF radio or Wi-Fi.
The integrated WebUI allows users to monitor receiver status, configure settings, perform firmware upgrades, and manage feature activations. The S631 is Athena-enabled and supports Atlas correction services.
Technology & Performance
Powered by Hemisphere's Athena RTK technology, the S631 delivers industry-leading RTK performance with near-instant initialization, even in challenging environments. It supports RTK corrections via UHF radio, cellular modem, Wi-Fi, Bluetooth, or serial communication, providing centimeter-level positioning accuracy.
With an Atlas subscription, the S631 can receive global L-band satellite correction services, delivering sub-decimeter positioning accuracy worldwide without requiring a local GNSS base station or communication infrastructure.
Key Features
- Multi-frequency, multi-constellation support: GPS, GLONASS, BeiDou, Galileo, QZSS, IRNSS, and Atlas L-band
- RTK baselines of up to 50 km with fast initialization
- Wireless connectivity: UHF (400 & 900 MHz), cellular, Bluetooth, and Wi-Fi
- Athena GNSS engine for advanced RTK performance
- Integrated tilt sensor with up to 2 cm point correction
The S631 is an ideal solution for surveying and positioning applications requiring high accuracy, operational flexibility, and reliable performance in demanding environments.