Simulation and Analysis on Underwater Transmission Characteristics of Gaussian Pulse Lasers with Carrier Modulation

FLANN-based inter-code crosstalk suppression study for underwater laser communication

“…Based on MC method, equivalent beam transmission as a random collision of water molecules, particles and photons, this paper collects 106 samples of photons, records statistical properties (position, direction, weight, etc.) [18,20], and evaluates the channel characteristics. The beam can be considered as a multitude of light particles characterized by a Gaussian distribution of light intensity.…”

“… represents the root-mean-square radius of the laser beam, which can be used to describe the radial distribution of the laser beam with the probability density function of The analysis relies on the Cartesian coordinate system XOY, assuming an ideal water body with a specified water depth is o H . The origin of the generated Gaussian beam is taken as the coordinate origin O(0,0,0), the initial state is survival, the initial weight and the initial motion direction vector is 0 (0, 0,1) S , i.e., the cosine of the angle between the photon motion direction and , , x y z coordinate axis [18], the random motion step L , the initial direction of motion of the photon 0 0 0 0 ( , , ) S u v w , the new direction of motion is transformed to 1 1 1 1 ( , , ) S u v w after a scattering.…”