Abstract: A base station includes a base station body and a base station addressing device. The base station addressing device includes: an acquisition module configured to acquire satellite observation data at a current observation point; a calculation module configured to evaluate the observation quality at the observation point according to the satellite observation data; and an output module configured to output a first prompt according to the observation quality, where the first prompt indicates the suitability of the observation point for mounting the base station. The base station addressing device is detachably connected to the base station body so that the base station addressing device is capable of being detached from the base station body to perform an addressing task.

Abstract: A self-propelled device includes a housing; a traveling assembly including traveling wheels and a traveling electric motor, where the traveling assembly is coupled to the housing; and a mobile station including a satellite receiving antenna and a radio station, where the satellite receiving antenna is configured to acquire a satellite signal, the satellite signal includes satellite observation data of the mobile station, the radio station is configured to receive a radio signal from a base station, and the radio signal includes satellite observation data of the base station. The self-propelled device further includes a controller configured to control the self-propelled device to autonomously travel and perform a work task.