Base distance
ESA describes conventional single-base RTK service areas on the order of 10–20 kilometres; network approaches address wider-area service.
REAL-TIME DIFFERENTIAL GNSS
RTK
Real-Time Kinematic positioning uses carrier-phase GNSS measurements and corrections from a surveyed reference station to produce a high-precision position at a moving rover.
4CHAPTERS4VISUAL BLOCKS2GRAPH LINKS2SOURCES
POSITION / SELECTED CONCEPTReal-Time KinematicStart with the role, then move through the editorial sequence.
HOW TO READ THIS PAGE
Visual explanationA diagram or operating scene makes the relationship visible.
Structured modelA flow, comparison, capability set, or boundary map organizes the idea.
Guided explanationOriginal prose connects the concept to its operating context.
01 / Overview
A known point
improves a moving point.
RTK is a differential GNSS technique. A base receiver at a well-known position observes many of the same satellite and atmospheric errors as a nearby rover, allowing correction information to be applied at the rover.
Carrier-phase measurements can support centimetre-level positioning, but the receiver must resolve integer ambiguities and maintain suitable satellite tracking.
02 / Architecture
Reference, corrections,
rover position.
SPACEShared satellitesReference and rover observe overlapping signals under different local conditionsKNOWNReference infrastructureStation identity, coordinates, frame, equipment, observation quality, and operations
MOVECorrection deliveryService identity, mountpoint or channel, network, account, format, age, continuity, and gaps
RESOLVEField roverAntenna, receiver, firmware, configuration, observations, ambiguity state, quality, and position
PROVEMachine and field resultGeometry, offsets, steering or mapping, implement behavior, conditions, outage response, and acceptance- 01Shared satellites→Reference infrastructurereference observations
- 02Shared satellites→Field roverrover observations
- 03Reference infrastructure→Correction deliverycorrection product with reference context
- 04Correction delivery→Field roverreal-time delivery and status
- 05Field rover→Machine and field resultbounded position solution
- 06Machine and field result←Field roverfield acceptance and failure evidence
A single-base RTK system requires a reference receiver, a real-time communication channel, and a rover receiver. Network RTK uses multiple stations to model corrections across a wider service area.
01SPACE / 01GNSS satellitesShared observations
02REFERENCE / 02RTK baseKnown coordinates
03LINK / 03Correction streamRadio or network delivery
04FIELD / 04RoverResolved field position
03 / Operating window
Precision depends
on conditions.
Correction continuity
Real-time operation depends on a working communication path between the correction source and rover.
Ambiguity resolution
The rover needs time and adequate observations to resolve carrier-phase ambiguities.
Signal tracking
Obstruction, multipath, interference, and loss of continuous tracking can reduce performance or force reinitialization.
04 / Boundaries
A correction status
is not a guarantee.
Fixed does not describe every error.A fixed ambiguity solution does not eliminate antenna, multipath, reference-frame, calibration, or machine-control errors.
Repeatability needs a stable reference.Changing bases, frames, coordinates, or correction providers can shift the realized position.
Machine performance is a system result.Receiver accuracy alone does not establish steering, implement, or field-operation accuracy.
05 / Connections
See the system around this concept.
Follow incoming and outgoing relationship records to understand what supplies, informs, enables, coordinates with, or extends this technology in the published knowledge graph.
Relationship radar / published edges2 records / 2 neighboring systems
Incoming01records point toward this concept
position roleReal-Time KinematicSelected technology
Outgoing01records point from this concept
02connections visible
position / Positioning infrastructureContinuously Operating Reference Stations ↗supplies reference corrections to
Reference-station infrastructure is one source of the correction information used in RTK positioning workflows.
act / Machine guidanceAgricultural Auto-Guidance ↗improves the positioning used by
RTK is used where a guidance workflow needs more precise relative positioning than an uncorrected solution can provide.
3CONNECTED ROUTES2–2STEP POSITIONS20ROUTE SOURCE LINKS
Technology system
From positioning to guidance
Build a clean mental model of satellite positioning, correction infrastructure, precision methods, and the guidance system that uses them.
CURRENT POSITION02
02 / CORRECT
Open the complete route ↗Add RTK
See why relative corrections are used when the field operation needs more precise, repeatable positioning.
06 / Evidence
Primary sources.
This briefing uses ESA's public RTK explanation and NOAA's description of continuously operating reference infrastructure. Exact performance must be verified for the receiver, service, baseline, installation, and environment.