| 摘要 |
A pair of transducer arrays are aimed underwater at a small angle to each other, and a source of acoustic energy is switched back and forth between the transducers under the control of a code generator to produce a pair of nutating beams that have a complementary code. Analogs of the beams are displayed aurally aboard a vessel for distinguishing the two beams by their code signals and detecting the bisecting plane between the beams by a steady tone signal.
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