The invention belongs to the technical field of
underwater laser detection, and discloses a complex hydrological multi-target
laser polarization detection device which is designed by adopting a transceiving heteroaxial design, effectively overcomes strong background interference of a
water body, splits
scattered light collected by a single
telescope into four different polarization angles (0 degree, 45 degrees, 90 degrees and 135 degrees), and improves the detection accuracy.
Signal amplitude detection is carried out through a PMT photoelectric
detector, meanwhile, according to interval numerical values provided by a
simulation time-varying model, adjustment can be carried out for different water qualities and
detection threshold values of different target receivers, the
system detection robustness can be effectively improved, and under the
water quality with the
attenuation coefficient larger than 0.385 m <-1 >, the
system detection robustness can be effectively improved within the 8m range. Detection and material identification are carried out on a target with the
diameter larger than 300 microns, meanwhile,
data processing is concise and efficient, and the real-time performance is high. The working principle is advanced, the technical method is unique and novel, and the real-time requirement of multiple targets in a complex
water area is met.