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    • 79. 发明公开
    • ACOUSTIC WIND MEASUREMENT
    • EP4390405A1
    • 2024-06-26
    • EP22215975.8
    • 2022-12-22
    • Vaisala, OYJ
    • KEITAANNIEMI, Joonas
    • G01P5/24
    • G01P5/245
    • According to an example embodiment, a wind measurement apparatus (100) is provided, the apparatus (100) comprising: a cover portion (110) and a base portion (120) arranged at a distance from each other to allow for an airflow therebetween; an arrangement of N receivers (112) disposed on a base-portion-facing side of the cover portion (110) in respective positions that serve as respective vertices of a convex regular polygon of order N, where N is at least three; a transmitter (111) disposed on the base-portion facing side of the cover portion (110) in a position that is at a substantially equal distance from each of the N receivers (112); and a reflector assembly (122) arranged on a cover-portion-facing side of the base portion (120), wherein the reflector assembly (122) is divided into N concave reflector portions (122-n), wherein each receiver (112-n) is associated with one of the reflector portions (122-n) and wherein the reflector assembly (122) and the base portion (110) are disposed with respect to each other such that the transmitter (111) is spatially aligned with a center point of the reflector assembly (122) and that each receiver (112-n) is spatially aligned with the associated reflector portion (122-n), wherein the transmitter (111) is arranged to transmit a measurement signal in a transmitter beam, TX beam, towards the reflector assembly (122) such that the TX beam meets each of the reflector portions (122-n), and wherein each of the receivers (112-n) is arranged to receive, via the associated reflector portion (122-n), a reflection of a TX beam portion that meets the respective reflector portion (122-n).