Method and device for classifying watercraft

摘要

The invention relates to a method of classifying one or several watercraft using the sound waves emitted or transmitted by these vehicles. The sound waves are thereby received using an array of underwater sound sensors of a sonar receiving system and processed into received signals. At least one amplitude spectrum is generated from these received signals consisting of one or more sets of frequency lines and any individual lines, from which the characteristic vehicle parameters are automatically determined in a frequency line pattern detection module or determined manually. Subsequently, the vehicle characteristic parameters are compared with the database parameters, where this comparison is evaluated with a matching factor. Considering the matching factor, one or several watercraft are determined as the result of the classification. In addition, the invention relates to a corresponding device for carrying out the process.

主权项

1. Method for classifying one or several watercraft using the sound waves emitted or sent by the watercraft, wherein the sound waves are received by an array of underwater sound sensors of a sonar receiving system and processed into received signals, where at least one amplitude spectrum is generated from the received signals,
the method comprising: determining the characteristic vehicle parameters using sets of frequency lines and individual lines contained in the amplitude spectrum, comparing the values of the characteristic vehicle parameters with the existing parameter values of a database, determining an associated matching factor from the comparison of the characteristic vehicle parameters with the database parameters, classifying the at least one watercraft using the matching factor, and comparing the quotients of the strongest individual lines with the quotients of the frequencies of the existing parameter values for individual lines in the database.