Once a quiet fishing village, Nazaré, Portugal, is home to some of the world's largest rideable waves, reaching up to 100 feet. Learn more about this destination, what causes these massive waves, and ...

Current market valuations are historically high, making risk management essential. Find out how to protect portfolio in ...

High-frequency combined sky-wave and surface-wave monostatic radar (CSSM-HF RADAR) is a new type of radar system inspired by the skywave components of high-frequency surface-wave radar (HFSWR). The ...

Ionosphere features influenced the propagation of a low-frequency (LF) signal in the Earth-Ionospheric Waveguide (EIWG). In this letter, the sky wave reflection coefficients are calculated using ...