To obtain the fine structures of a wave field on a noise emitting object, a new super‐resolution passive imaging system is constructed. The wave field detected by a hemispherically arranged microphone array corresponds directly to the wave field on the object by exploitingaprioriinformation about the object’s physical structures. Thus resolution of one‐tenth of a wavelength is realized. The principle, concrete construction, proposal of proper sound source models, and discussions on the effects of the measuring and additive noises are given, as well as several observed results.