Fig 1.
Schematic diagram of the direct detection principle.
Fig 2.
Schematic diagram of the polarization target detection principle.
Fig 3.
Schematic diagram of laser polarized underwater detection equipment.
Table 1.
Parameters of the DPS-532-B laser.
Fig 4.
Design of the photoelectric detection unit.
Fig 5.
Optical design image quality curve.
(a)2D structural diagram, (b)Spot diagram, (c)Wavefront diagram, (d)MTF diagram, (e)Field distortion, (f)Longitudinal aberration.
Table 2.
Characteristic parameters of the PIN detector.
Fig 6.
Diagram of the framework for the composition of the plan.
Table 3.
OP4354 performance parameters.
Fig 7.
Internal diagram of underwater polarization detector equipment.
Fig 8.
(a)10m×0.5m×0.5m tank, (b)Experimental system construction, c)Target images of different materials.
Table 4.
The proportion of dissolved substances in water.
Fig 9.
Comparison of the degree of polarization of different objects in water.
(a) 3m depth, (b) 5m depth, (c) 10m depth.
Table 5.
Underwater polarization measurement data.
Fig 10.
Comparison of the degree of polarization of different objects in the air.
(a) 3m depth, (b) 5m depth, (c) 10m depth.
Table 6.
Air polarization measurement data.
Fig 11.
Compare the polarization degree of 3m in different environments.
(a) 3 meters underwater depth, (b) 3 meters of air depth.
Table 7.
Polarization camera performance specification.
Fig 12.
Underwater measurement data.
Fig 13.
Air measurement data.
Table 8.
Analysis of differences in underwater measurement data.
Table 9.
Analysis of differences in measurement data in the air.
Fig 14.
Comparison experiment result chart.
Table 10.
Comparison results of root mean square errors of three targets.