Robots
Outdoor robots benefit from heading when turns, slopes, vibration, and magnetic interference make simple heading sources unreliable.
Robot caseRecommended RTK module
Unicore UM982
UM982 is currently the recommended RTK module on GPSRTK.com for systems that need centimeter positioning plus reliable heading. It is one product in the broader shop, alongside GPS modules, IMU sensors, antennas, base station parts, cables, and accessories.
Why UM982 is recommended
| Positioning role | Centimeter RTK plus heading-capable architecture for machines, robots, UAVs, agriculture, vehicles, and marine systems. |
|---|---|
| Key value | Dual-antenna heading can reduce reliance on magnetometers or expensive INS in outdoor applications when the baseline is designed correctly. |
| Recommended antennas | Two matched multi-frequency active antennas with a rigid baseline for heading; one survey-grade antenna is acceptable when heading is not required. |
| Correction strategy | NTRIP first when coverage is available; local base station or PPK when connectivity or correction stability is weak. |
| Integration risk | Firmware, protocol output, antenna phase center, cable routing, EMI, thermal layout, and baseline flex must be validated before production. |
Application fit
Agriculture
Autosteer and field robots need repeatable baseline geometry, long-life antennas, correction logging, and clear base-station strategy.
Agriculture caseVehicles / Marine
Dual antennas can provide heading at low speed or stationary conditions when the baseline has enough length and stiffness.
Vehicle heading caseRecommended companion products
Matched antenna pair
Heading performance depends on a rigid, measured baseline and two matched multi-band antennas.
Shop AntennasBase station or NTRIP link
Correction quality, age, and coverage often decide whether a promising setup works in the field.
Shop AccessoriesIMU fusion notes
Use IMU and odometry fusion when GNSS confidence changes under trees, glass, or metal structures.
EasyIMU Notes