What LiDAR is
LiDAR stands for Light Detection and Ranging. The sensor sends laser light into the environment and measures how long reflections take to return. From many measurements it can build a geometric picture of nearby objects and surfaces.
How robot mowers use LiDAR
A mower can use LiDAR to map its surroundings, estimate its position relative to that map and detect structure such as walls, trees or other obstacles. Some systems use LiDAR as a primary localization method; others combine it with cameras, GNSS, wheel odometry or inertial sensors.
Why LiDAR can help in complex yards
Unlike satellite positioning, LiDAR does not need a clear view of the sky to measure nearby geometry. That can be useful around buildings, under tree cover or in courtyards. It can also provide consistent distance information in lighting conditions that may challenge purely camera-based systems.
LiDAR limitations
LiDAR is not magic. Very sparse environments can provide fewer distinctive features, sensor placement matters, and rain, dirt or highly unusual surfaces may affect readings. A mower also needs good mapping and navigation software; a high-spec sensor cannot compensate for weak software.
RTK or LiDAR?
Neither technology is universally better. Open lawns can be an excellent fit for RTK. Dense or structurally complex properties may favour LiDAR or hybrid systems. Yardnetic therefore compares the property conditions and the complete navigation stack instead of treating the sensor label as the verdict.