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SOLAS The International Convention for the Safety of Life at Sea, the foundational international maritime treaty establishing minimum safety standards for ship construction, equipment, and operation, including the specific carriage requirements… Regulatory & Compliance Solid-State Power Amplifier Solid-State Power Amplifier is a power amplifier that uses semiconductor devices rather than vacuum tubes to increase RF output power. Hardware Spectral Efficiency Spectral Efficiency is the amount of useful information transmitted per unit of spectrum, usually expressed as bits per second per hertz. It measures how effectively spectrum is converted into usable… Concept/Framework Spectrum Spectrum is the range of electromagnetic frequencies used for communication, sensing, and other radio-related functions. It is the underlying resource for wireless systems. Concept/Framework Spectrum Coordination Spectrum Coordination is the planning and management of radio spectrum use to reduce interference and allow compatible services to operate. It aligns technical and regulatory use of frequency resources. Operations Spectrum Operations The general operational practice of managing spectrum resources — allocation tracking, coordination with adjacent users and regulators, interference monitoring and resolution, and regulatory compliance — across telecommunications operators and any… Operations Spectrum Refarming The regulatory and operational process of reallocating spectrum previously licensed for one cellular technology generation to a newer generation, retiring or migrating the legacy technology's use of that band as… Operations Spectrum Sensing The process of detecting the presence, absence, and characteristics of RF activity on a candidate frequency channel, used to determine whether that channel is available for secondary or opportunistic use… Operations Spoofing The deliberate transmission of falsified signals designed to deceive a receiving system into accepting fabricated data as genuine, most commonly counterfeit GNSS signals reporting false position or time information. Concept/Framework Spot Beam Spot Beam is a narrow, focused satellite or radio beam that concentrates energy on a limited geographic area. It provides localized coverage with higher directional gain. Hardware