Noise immunity increase of sonar signals from the complex bodies identification and recognition against reverberation interferences

Abstract

Methods of identification and recognition of sonar signals reflected from the bodies with complex geometric shape have been developed and calibrated in hydroacoustic tank and at sea. Their greater noise immunity is achieved in comparison with well-known recognition methods. Comparison of these methods with wave front reversal method is given. Simulation results help to explain well-known fact that dolphins use multiple impulse sounding transmission with unequal interpulse periods.

Keywords

• гидролокационные сигналы
• идентификация
• распознавание
• реверберация
• классификационные признаки