"RTK vs LiDAR vs Vision: Which Robot Mower Navigation Suits Your Yard?"
Updated 2026-09-24
Almost every new robot mower is "wire-free," but they find their way around in very different ways. The navigation system matters more than almost any other spec, because it decides whether the mower works in your yard.
The four systems
| System | How it knows where it is | Works well | Struggles with |
|---|---|---|---|
| RTK GPS (base antenna) | Satellite positioning corrected by a small antenna you mount in the yard, accurate to about an inch | Open lawns, large properties | Heavy tree cover, lawns tight against tall buildings |
| Network RTK | Same satellite positioning, but the corrections come over the cellular network, so there's no antenna to install | Open lawns in areas with network RTK coverage | Same canopy problems; needs cell coverage |
| LiDAR | A spinning laser maps surroundings — trees, fences, walls — and positions the mower against them | Yards with trees, fences and structures; works at night | Wide-open lawns with nothing nearby to "see" |
| Camera vision | Cameras and AI recognize grass edges and obstacles | Yards with clear grass edges; no setup | Low light, ambiguous edges (grass running into a meadow) |
| Boundary wire | A wire pegged around the lawn edge carries a signal the mower won't cross | Anything, reliably | Installation effort; wire breaks |
Most current mowers combine two or three of these. RTK + vision is the most common pairing: satellites for position, cameras for obstacles. LiDAR + RTK + vision is the most capable and the most expensive.
Which should you pick?
Open lawn, few trees. RTK or network RTK is accurate and cheap. Network RTK is the easiest setup, if coverage exists where you live (brands have coverage checkers on their sites).
Trees along the edges. RTK + vision usually copes. Place the antenna (if there is one) where it has the clearest view of the sky.
Heavy tree cover over parts of the lawn. Choose LiDAR, or a camera-led system that doesn't depend on satellites. Canopy can block satellite signals, and a mower that loses its position stops or wanders.
Lots of separate zones, narrow paths, or a mix of everything. A triple-sensor mower (LiDAR + RTK + vision) is the safest bet.
Tight budget, simple yard. A boundary-wire mower is still the cheapest and very reliable once installed — you just have to lay the wire.
The yard matcher flags navigation problems automatically when you select your tree cover.