Laser remote sensing of the underwater sound field is more advanced detection technology for underwater object search

however

the sensitivity of the detection system had not been analyzed. This article analyzed three laser remote sensing methods for underwater sound field

and then studied the surface microwave formed from underwater sound field. It was obtained through the theoretical calculation that the minimum detection limit of amplitude was 0.424 4 mm for surface microwave. By analyzing the relationship between the minimum detection limit of amplitude

the height of sender and the aperture of receiver

it was understood for the theoretical basis of influence factors for the detection of underwater sound field

also provided for the basic idea for improving sensitivity.