Non-Terrestrial

Frequency Mixing Frequency mixing is the process of combining two or more signals to generate output signals at new frequencies, typically the sum and difference frequencies. It is used to translate signals… Concept/Framework Frequency Reuse Frequency Reuse is the use of the same frequency resources in multiple non-interfering locations or cells to improve spectrum efficiency. Concept/Framework Frequency Stability Frequency stability is the degree to which a signal source maintains its intended frequency without drifting beyond acceptable limits. It is a measure of how reliably the source remains usable… Concept/Framework Frequency Synthesizer Frequency Synthesizer is a signal source that generates a precise adjustable frequency used as a reference in radio and communications systems. It provides the frequency foundation for RF equipment and… Hardware Gain To Noise Temperature Ratio Gain To Noise Temperature Ratio is a receiver performance measure that relates antenna gain to system noise temperature, often expressed as G/T. It describes receive sensitivity by comparing the useful… Concept/Framework GEO GEO is geostationary Earth orbit, an orbital regime where a satellite remains approximately fixed relative to a point on Earth. It supports persistent coverage of a region through orbital mechanics… Concept/Framework Geofencing The definition of a virtual geographic boundary that triggers an automated action when a tracked asset's GNSS-derived position crosses it, providing boundary enforcement without requiring a physical barrier. Concept/Framework GMDSS The IMO-mandated, SOLAS-regulated international system of satellite and terrestrial radio equipment and operating procedures that vessels are required to carry, enabling automated distress alerting, maritime safety information broadcast, and search-and-rescue… Regulatory & Compliance GNSS The category of satellite constellations that broadcast precise timing and orbital position signals, enabling any compatible receiver to calculate its own position, velocity, and time by measuring signals received simultaneously… Concept/Framework GNSS Denial The operational condition in which a device or region loses access to reliable GNSS positioning and timing, typically caused by jamming or spoofing directed at GNSS signals, affecting every downstream… Concept/Framework