Simulator and test method of polarization transmission in sea fog

A simulator of polarization transmission in sea fog, comprising an emitting device (1), a receiving device (2), a main box body (3), an automatic light alignment system (4), a water fog layer calibration system (5), a salt fog layer calibration system (6), and an aerosol layer calibration system (7);

• an aerosol layer lens spacer (31), a water fog layer lens spacer (32) and a salt fog layer lens spacer (33) are sequentially arranged in the main box body (3) from top to bottom at intervals to divide the interior of the main box body (3) into an aerosol layer, a water fog layer, a salt fog layer and an empty layer from top to bottom;
• the automatic light alignment system (4) comprises a semiconductor photosensitive plate (41), a first control device (42) and a planar spiral track (43);
• the semiconductor photosensitive plate (41) is arranged at the inner top of the main box body (3);
• the planar spiral track (43) is arranged at the inner bottom of the main box body (3);
• the first control device (42) is electrically connected to the semiconductor photosensitive plate (41) and the planar spiral track (43), respectively;
• the emitting device (1) is installed on the planar spiral track (43), and comprises a laser device (11), a liquid crystal light modulator SLM (12), an attenuation sheet (13), a polarizer (14) and a λ/4 slide (15);
• the laser device (11), the liquid crystal light modulator SLM (12), the attenuation sheet (13), the polarizer (14) and the λ/4 slide (15) are sequentially arranged on the same optical axis;
• the receiving device (2) is arranged at the upper part of the main box body (3), and comprises a beam splitter prism (21), a polarimeter (22), an optical power meter (23) and a computer (24);
• the beam splitter prism (21) receives the light emitted from the emitting device (1) and divides the incident light into two beams, one beam is transmitted to the polarimeter (22), and another beam is transmitted to the optical power meter (23);
• the computer (24) is electrically connected to the polarimeter (22) and the optical power meter (23), respectively;
• the water fog layer calibration system (5) comprises a water fog generator (51), a hygrometer (52), a thermometer (53), and a water vapor pressure tester (54);
• the water fog generator (51) communicates with the water fog layer and is electrically connected to the computer (24);
• the hygrometer (52), the thermometer (53) and the water vapor pressure tester (54) are all fixedly installed in the water fog layer, and the hygrometer (52), the thermometer (53) and the water vapor pressure tester (54) are electrically connected to the computer (24), respectively;
• the salt fog layer calibration system (6) comprises a salt fog generator (61), a chloride ion absorber (62) and a second optical power meter (63);
• the salt fog generator (61) communicates with the salt fog layer and is electrically connected to the computer (24);
• the chloride ion absorber (62) and the second optical power meter (63) are fixedly installed in the salt fog layer, and the chloride ion absorber (62) and the second optical power meter (63) are electrically connected to the computer (24), respectively;
• the aerosol layer calibration system (7) comprises an aerosol generator (71), a visibility meter (72) and a particle size analyzer (73);
• the aerosol generator (71) communicates with the aerosol layer and is electrically connected to the computer (24);
• the visibility meter (72) and the particle size analyzer (73) are fixedly installed in the aerosol layer, and the visibility meter (72) and the particle size analyzer (73) are electrically connected to the computer (24), respectively.