BISTATIC SODAR FOR ANALYSIS OF WIND FIELDS AND CHARACTERISTICS OF TURBULENCE IN SURFACE AND BOUNDARY LAYERS OF ATMOSPHERE Russian patent published in 2020 - IPC G01S13/95 G01S17/95 

FIELD: acoustics.

SUBSTANCE: invention relates to ground-based hardware for acoustic remote sensing of lower layers of atmosphere. Bistatic sodar enables probing by triggering recording of echo signal before radiation of probing pulse to reduce "dead zone" practically to zero. Bistatic sodar comprises a set of receiving-emitting antennae by the number of probed directions, wherein the emitting and receiving antennae of each channel have independent bodies adjoining each other, besides, receiving antenna includes parabolic acoustic mirror in focus of which professional echo signal microphone is installed, and the radiating antenna consists of a plurality of horn loudspeakers with radiation axes oriented collinearly to the axis of the parabola of the acoustic mirror of the receiving antenna, and each receiving channel consists of receiving microphone, input integral differential amplifier, which provides microphone with phantom power and output connected to input of corresponding audio interface of control computer, and the probing pulses are emitted simultaneously on all radiating channels with frequency and duration, which are set by the software of the control computer.

EFFECT: invention can be used to obtain information on wind velocity and direction, pulsation wind characteristics in surface and boundary layers of the atmosphere, starting from heights of 1 m.

4 cl, 2 dwg