The invention relates to a method for measuring an angular spectrum of the
acoustic transmission performance of a large-area
hydrophone material. According to the method, a
broadband transducer with certain
directivity and low fluctuation along with frequency and
inverse filter compression pulse signals are designed, so that the lowest test frequency of a
test sample is reduced to 1 / 2.5 of that of a
test sample tested by a conventional method; by implementing the
broadband testing technology, work efficiency is greatly improved, and testing time is shortened to a fraction and even one of dozen fractions of testing time spent by the conventional method; and the angular spectrum of the
acoustic transmission of a complicated component is measured by reasonably arranging an acoustic field and selecting a
proper time window. The method has the advantages that the angular spectrum of the
acoustic transmission performance of the component made of the
hydrophone material is measured at
low frequency, and conflict in aspects of the lowest testing frequency, the testing angle, the size of the
test sample and the like is overcome to the greatest extent; the problem of low efficiency of the conventional method is solved, and work efficiency is greatly improved; and the limitation that the conventional method only can be used for testing simple test samples is broken through, and the angular spectrum of the acoustic
transmission performance of the complicated component can be measured.