A method and system for object location detection in a space, the method including the steps of: configuring the resolution of a multi dimensional sensing apparatus to divide a multi dimensional space into M first sub spaces; scanning the multi dimensional space to generate M first sensed data and at least one first locked space; configuring the resolution of the multi dimensional sensing apparatus to divide each of the at least one first locked space into N second sub spaces; scanning the at least one first locked space to generate at least one group of second sensed data and at least one second locked space; and combining at least one of the M first sensed data that corresponds to the at least one first locked space, with the at least one group of second sensed data to form a set of output sensed data.