| 摘要 |
In a method for detecting and classifying submarines, the submarine is excited into natural resonance by insonification. To achieve a long range of detection and a very small rate of false alarms, the insonification is carried out by means of a transmitted pulse sequence in which the individual pulse frequencies are tuned to in each case one of the resonant frequencies of at least one known pattern of resonant frequencies of a submarine type. The totality of the lines of resonant frequency contained in the received spectrum is compared with the pattern of resonant frequencies of the submarine type and in the case of a correspondence, a detection and/or a classification signal is output. |
