Key Points Provides alternate control connectivity to maintain continuity during link or device failure Reduces single points of failure in control communications Used in critical industrial control systems, process control, and safety-related systems Designed to keep control communications available if…
Key Points Reduces system activity to protect hardware Used after anomalies or loss of control Aims to preserve survivability and recovery Keeps essential functions alive while minimizing unnecessary loads Waits for recovery, reconfiguration, or operator intervention Definition Safe Mode is…
Key Points Moves service between gateway sites or paths Supports continuity and resilience Used in satellite and network operations Can be triggered by failure, coverage changes, or optimization Driven by fault recovery, coverage changes, or load balancing needs Definition Gateway…
Key Points Measures vertical pointing direction relative to a reference plane Used with azimuth for full three-dimensional orientation Common in satellite ground stations, radar, astronomy, and field alignment Depends on choice of reference plane and local terrain Often confused with…
Key Points Moves service between satellites or beams Used in constellation and mobility scenarios Supports continuity during orbital movement Requires timing and coordination Handles coverage transitions in dynamic satellite networks May include brief transition periods or signal interruptions Definition Satellite…
Key Points Provides backup functionality Supports continuity during failures Often paired with switching or cross-strapping Used in spacecraft, industrial systems, and critical infrastructure Operationally effective through automatic or manual takeover Definition Redundant Subsystem is a backup or duplicate subsystem that…
Key Points Uses more than one gateway path or site Improves resilience and service continuity Relevant in satellite and network architectures Reduces single-point gateway dependency Requires path independence and failure domain analysis Definition Gateway Diversity is the use of multiple…
Key Points Reflects directional concentration of energy Affects transmit and receive performance Important in link budgets and coverage planning Influenced by design, size, and frequency Operates through antenna geometry and radiation pattern shaping Definition Antenna Gain is a measure of…
Key Points Affects antenna gain and beamwidth Important in satellite and wireless link budgets Influences installation and pointing requirements Balances performance against physical constraints Larger dishes generally improve gain but increase physical and installation requirements Definition Dish Size is the…
Key Points Arises from shared channel use Common in wireless and satellite systems Can reduce capacity and quality Managed through reuse planning and coordination Central concern in spectrum reuse and coordination Definition Co Channel Interference is interference that occurs when…
