Over the past few years, two smart home devices have seen a surge in their sales: robotic vacuum cleaners and robotic lawn mowers. When the reference station is in the front yard and the robotic mower is mowing in the back yard, due to the issues of angle and occlusion, the number of common satellites between the robot lawn mower and the reference station in the front yard will decrease, resulting in a decline in positioning accuracy. If you are not impressed yet, the lawn mower also features an auto-return mode, implying the robot mower will automatically return to its charging station when it runs low on power.