Here is a commercial autonomous robot lawn mower designed for complex lawns. KUMAR can be used at large parks, gardens and forests. It uses 4 ultrasonic radars and LiDAR for mapping and obstacle avoidance. It uses a GPS-RTK satellite positioning system and combines with your phone to respect virtual boundaries.
This robotic mower can take on 70% slopes. It has mowing efficiency of 4000m2/hr.