1. A robot cleaner that divides a full region into one or more sectors to perform a cleaning operation, the robot cleaner comprising: one or more detecting devices configured to detect objects within the one or more sectors and configured to output corresponding detection data; and a controller configured to generate a partial map for each of the one or more sectors based on the detection data, and configured to generate a full map corresponding to the full region based on a relative position of the one or more sectors.