Acceleration of Offshore Electromagnetic Energy Distribution Prediction Algorithm Based on Ray-Tracing Method and PM Wave Spectrum

In order to improve the spectral resource utilization, the sea electromagnetic energy distribution prediction algorithm is proposed, which is the basic study of spectrum interference and offshore communication channels. This letter studies the acceleration of the prediction algorithm for offshore electromagnetic energy distribution. In conjunction with the Pierson–Moscowitz (PM) wave spectrum, the effective rays are discretized by establishing the normal vector matrix of the reflection plane. We propose to introduce the effective reflecting surface of the PM wave spectrum to improve the estimation accuracy of the electromagnetic spectrum distribution in the complex marine environment. We provided an effective ray decision algorithm to accelerate the prediction of reflected ray field strength distribution. In particular, combining the free-space propagation loss characteristics of electromagnetic waves, ray distribution with uneven Angle Variation is proposed. Based on the PM wave spectrum, atmospheric refraction, and earth curvature of the complex marine environment model, the ray-tracing method can quickly calculate the marine electromagnetic spectrum distribution.