RTK (Real-Time Kinematic) targets centimeter-level accuracy under Fixed conditions based on carrier-phase observations and correction data.
RTK Operating Principles & Error Correction
How does RTK reduce atmospheric errors that standard GPS cannot resolve to the centimeter level?
RTK aims for centimeter-level precision using carrier phase in addition to code observations. (L1 wavelength β 19cm)
β» Carrier phase is precise, but errors may remain due to multipath and environmental effects.
A base station generates GNSS observations (code/carrier) at a known fixed coordinate and delivers them to the rover as RTCM correction data (NTRIP / UHF, etc.).
β» Correction effectiveness may decrease as the distance between base and rover increases.
The rover performs differential processing using base station data and resolves integer ambiguities (Ambiguity) to transition from Float to Fixed.
A method of receiving correction data over the internet (LTE/5G). If you can use public/private Network RTK (VRS) services, you can build centimeter-level positioning without installing an on-site base station. β» Performance may vary depending on service coverage/policies and communication quality.
A wireless method useful in remote areas, offshore sites, or construction sites without network coverage. It transmits correction data via direct base-to-rover communication (P2P). β» Range/stability may vary depending on output power, antenna, installation height, and RF environment.
Detailed Comparison of Positioning Technologies
Figures are typical reference ranges and may vary by device, environment, and service conditions.
| Spec | GrowSpace RTK | Standard GNSS (GPS) | DGPS (SBAS) |
|---|---|---|---|
| Accuracy (Horizontal) | Horizontal 1β2 cm + 1 ppm (RMS, Fixed) | 1β3 m (CEP) | 0.5β1.5 m (CEP) |
| Time to Fix | < 10 seconds (Typical) | < 30 seconds | < 60 seconds |
| Frequency Bands | Multi-band (L1/L2/L5) | Single-band (L1 typical) | Single-band (L1) |
| Update Rate | 1β10Hz (Option: 20Hz+) | 1Hz | 1Hz ~ 5Hz |
| Supported Constellations | GPS, GLONASS, Galileo, BeiDou | GPS (Mainly) | GPS + SBAS |
In tunnels and warehouses where satellite signals cannot reach, UWB takes over.
Secure continuous indoor-outdoor location data with a hybrid tag combining RTK and UWB.
We provide an all-in-one solution from base station to rover to cloud.
A high-precision base (or Network RTK) generates correction data
Transmit RTCM corrections wirelessly (UHF/LTE)
A moving platform (drone/robot) outputs corrected cm-level coordinates (Fixed)
Real-time monitoring and autonomous path control
Control excavator bucket position at the centimeter level based on design drawings to minimize surveying steps.
Automatically control tractor/transplanter routes with minimal deviation to prevent duplicate work and reduce resource usage.
Maintain accurate position (hovering) even in wind when inspecting structures that require precise μ κ·Ό, such as bridges or transmission towers.
Leave the technical κ³ λ―Ό to us.
GrowSpace engineers will propose an optimized deployment plan for your site environment.
