Each unmanned cluster listened continuously for sound and calculate the bearing to it and record other characteristics, these were automatically sent to a control post where they were automatically collated and the location of the sound source calculated.
Each unmanned cluster listened continuously for sound and calculate the bearing to it and record other characteristics, these were automatically sent to a control post where they were automatically collated. Each unmanned cluster listened continuously for sound and calculate the bearing to it and record other characteristics, these were automatically sent to the location of the sound source. This sound source was calculated.