Real-time evaluation method for small number of measuring points of underwater radiation noise of ship

• Main Authors: CHEN JINGBING, YAN YOUGUI, FAN YUQI, CHENG GUO, LI RUIBIAO, YU WENJING
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2019
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; TESTING

The invention discloses a real-time evaluation method for a small number of measuring points of underwater radiation noise of a ship, which belongs to the field of real-time evaluation of radiation noise and comprises the following steps of: arranging a self-noise sensor and a vibration sensor for the ship to be evaluated, and arranging a radiation noise hydrophone outside the ship; operating common working conditions such as a highest speed, a lowest speed, starting all common equipment, starting as few equipment as possible and the like, and recording sound pressure measurement values and vibration responses obtained by the self-noise sensor, the vibration sensor and a radiation noise sensor of the ship under various working conditions; selecting a plurality of combination working conditions, calculating and storing transfer matrixes under different combinations; and measuring self-noise and vibration signals in an actual navigation process of the ship, selecting a corresponding transmission matrix accordin