Radar and communication systems are ubiquitous in both military and commercial applications. Whether they are being used to navigate, control air traffic, track weather patterns, carry out search-and-rescue missions, map terrain, or countless other functions, radar technologies are constantly advancing.   As radio-frequency (RF) systems, radar capabilities hinge on the …

Introduction: The Silent Pulse of the Earth Beneath the Earth’s surface, imperceptible vibrations create a silent pulse that, until recently, remained beyond human detection. The evolution of seismic sensor technology has granted us access to this hidden world, unraveling a wealth of information about the Earth’s dynamic processes. In this …