| 摘要 |
A sonar system wherein sum and difference beam patterns are generated utilizing a plurality of transducer elements arranged in a line array. Receiver apparatus including a receiver transducer also constituted as a line array perpendicular to the transmitter transducer is used to form sum and difference receiver beams and return signals are processed so as to accurately define the azimuth as well as elevational position of a target within a target area.
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