effective source level effective source levelthe source level of an array when considered as a single omnidirectional sound source Related Articles: How is sound used to find submarines?Surveillance Towed Array Sensor System Low Frequency Active (SURTASS LFA) Sonar TechnologyProjector ArrayPropagation from a sound source array in the near field and far fieldSurveillance Towed Array Sensor System Low Frequency Active (SURTASS LFA) Sonar Sound Chris Knowlton2017-10-12T09:57:14-05:00