The invention discloses a marine monitoring
buoy device and
system based on water surface and
underwater target early warning. The device comprises a
buoyancy compartment, a water surface target recognition and early warning device, a positioning and
signal transmission device used for communication, an
underwater heavy block located on the lower portion of the
buoyancy compartment, a plurality ofstandard hydrophones, an
underwater laser radar and a bottom anchor. When the monitoring buoys are arranged on the sea, target recognition and early warning systems are arranged on the water surfaceand under the water, and the possibility that the buoys are damaged is fundamentally eradicated. By establishing a single-
photon laser radar fine imaging model, through sequential denoising of depth,intensity and image background and
point cloud recovery, fine image features can be presented, effective early warning can be performed, and the requirements of speed and definition can be met; the
data acquisition system adopts an ADC component based on a low-power-consumption embedded industrial
personal computer, a high-capacity
solid state disk and 12-channel synchronous sampling, is suitablefor
signal acquisition with
phase relationship requirements among different channels, and meets the complex wiring requirements of different sensors.