Positioning

GNSS & RTK — Centimeter GPS

GNSS (GPS, Galileo, BeiDou, GLONASS) with RTK or PPK corrections delivers the horizontal and vertical accuracy boundary surveys and machine guidance demand — not the ±5 m you get from a phone.

Who needs this?

Anyone staking property lines, setting control, running drone GCPs, or verifying machine guidance. Network RTK (NTRIP) removes the need for a local base when cellular coverage and VRS networks are available.

RTK vs PPK

What to look for on a spec sheet

Multi-frequency
L1/L2/L5 support improves tracking and ionospheric resilience.
Tilt compensation
IMU-assisted measurement without perfect rod verticality — huge for productivity.
Data link
Radio, cellular NTRIP, or satellite corrections — match your job site.

Drone + GNSS workflows · Full buyer's guide