Patent ID: 8004935
Filing Date: 2011-08-23
Classification: G01S,G10K

Abstract:
1. A noise-reducing housing for a sodar system with a transducer array that sequentially emits and receives multiple generally conical main beams of sound along different primary axes, where the emitted beams of sound have a defined wavelength in air, the housing comprising: an enclosure that defines an interior volume that is essentially open to the atmosphere at the top, to emit and receive the beams; and a non-woven fiber, sound-absorbing material lining at least some of the enclosure surfaces that face the interior volume; where the sound-absorbing material has a thickness of at least about one-half of the defined wavelength and a weight of at least fifty ounces per square yard; and where the sound-absorbing material comprises more than 50% void volume.