Resilience

Space Systems Space systems are the collection of spacecraft, ground segments, mission control functions, and supporting infrastructure used to operate a mission in the space environment. The term includes the architecture required… Concept/Framework Spacecraft A spacecraft is a hardware platform intended to operate in the space environment and perform a mission such as communications, sensing, navigation, or experimentation. It includes the structural, power, control,… Hardware 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 Split Horizon Split Horizon is a routing rule that prevents a router from advertising a route back out of the same interface or direction from which the route was learned. Protocol State Estimation State Estimation is the inference of a system's internal state from measured data, model behavior, or both. It estimates what cannot be directly observed. Operations State Synchronization State synchronization is the process of ensuring that distributed components share a consistent view of operational state. It is used so failover, steering, and session handling continue to work when… Concept/Framework Stateless Communication Stateless Communication is communication in which each message is handled independently without relying on stored session context. Protocol Storm Avoidance Data Link Storm Avoidance Data Link is the communications link used to transmit storm-avoidance advisories, forecasts, or route changes to Maritime operators. It supports safety-aware navigation and enables timely operational response to… Protocol Sun Sensor Sun Sensor is an attitude sensor that determines spacecraft orientation by detecting the direction of the Sun and translating that measurement into an angular reference for the spacecraft. Hardware