A monostatic sodar system includes an array of essentially identical acoustic transducers. Each transducer includes a cone transducer element which generates and receives sound and a horn which guides the sound to and from the cone to a circular or hexagonal active region from which sound is emitted during a sound emission and into which sound is received during a reception of emitted sound that has been reflected by the atmosphere. Each transducer defines a generally hexagonal perimeter shape and occupying a generally hexagonal area of the array. The system includes a signal generator that generates signals that are used to drive the transducers, a phase and switching control, a receiver that receives signals from the transducers, a processor, an open-top enclosure, and a sound reflector within the enclosure.