1. A method comprising: detecting, by a control system, an event that indicates desired relocation of one or more of a plurality of observer robots within a worksite, wherein each respective observer robot of the plurality of observer robots has one or more respective sensors configured to provide information related to respective positions of a plurality of target objects within the worksite; in response to detecting the event, the control system: (i) determining one or more observer robot locations within the worksite at which one or more of the respective sensors are each capable of providing information related to respective positions of one or more of the plurality of target objects and (ii) determining a respectively intended level of positional accuracy for at least two respective target objects of the plurality of target objects; based at least in part on the determined respectively intended levels of positional accuracy, the control system selecting one or more of the determined observer robot locations within the worksite; and directing, by the control system, one or more of the plurality of observer robots to relocate to the one or more selected observer robot locations within the worksite.