Marketing pages mix these terms together, but they answer different questions. RTK tells the mower where it is. LiDAR and cameras tell it what is in front of it.
Most current wire-free mowers use RTK for position and add a camera, and sometimes laser sensing, for perception. Understanding the split makes it obvious which model suits your garden.
RTK: knowing where you are
RTK pairs the mower's satellite receiver with a fixed reference antenna a short distance away. Because both see the same satellite errors, comparing them cancels most of the error and leaves centimetre-level positioning.
This is what makes virtual boundaries and straight-line mowing possible. It is also why the system stops being accurate when the sky view is blocked.
Cameras: seeing what is there
Camera systems classify what is ahead — a ball, a hose, an animal — and steer around it. On some mowers the camera also supports positioning where satellite coverage weakens, by tracking visual landmarks.
Cameras depend on light and a clean lens. Dusk mowing and muddy conditions reduce their effectiveness, and they need occasional wiping.
LiDAR and laser sensing
Laser-based sensing measures distance directly and works in the dark, which makes it strong at detecting shape and proximity. It is less good at telling you what an object is.
In garden robots, laser sensing usually appears alongside cameras rather than instead of them, because the two are complementary: one measures, the other identifies.
Which combination suits which garden
An open lawn with nothing left on it needs positioning only, and a plain RTK model such as the Segway Navimow i110N is enough.
A garden with children, pets, furniture or partial tree cover benefits from added perception, which is what the Segway Navimow X430 and eufy Robot Lawn Mower E15 provide.
A lawn under heavy permanent canopy is still best served by a boundary wire, because no amount of perception replaces a position fix that is not there.
Keep reading
Frequently asked questions
Final verdict
Treat positioning and perception as separate line items. Buy RTK for accurate boundaries and efficient mowing patterns, add camera or laser perception if things get left on your lawn or trees interfere with the sky view, and fall back to a boundary wire when the canopy is genuinely dense.
Editorial Team
TopPremiumPicks Editorial Team
The TopPremiumPicks Editorial Team researches and compares premium products across multiple categories using manufacturer specifications, professional reviews and customer feedback. Our guides are research-based and do not represent hands-on product testing.