Key Points Accounts for hostile or degraded RF conditions Emphasizes survivability and resilience Relevant to military and security-sensitive links Combines resilient modulation, redundancy, encryption, and spectrum management Definition Contested Environment Communications is communications designed to continue operating when interference, jamming,…
Key Points Directional transmission toward the network or satellite Opposite of downlink in satellite and mobile systems Used in satellite communications, mobile networks, and wireless systems Important for link budget and interference analysis Performance varies independently from downlink due to…
Key Points Manages shared or nearby spectrum use Reduces interference between systems Important in satellite and wireless planning Involves technical analysis, geographic separation, and operational agreements Works by analyzing spectrum assignments, orbital or geographic separation, power levels, and interference potential…
Key Points Creates localized RF path blockage Depends on vessel heading and antenna placement Can affect tracking and handoff performance Varies with mast height, antenna spacing, and target azimuth Can cause link loss, degraded tracking, fading, and intermittent reception Presents…
Key Points Combining multiple physical links into one logical transport relationship Used across network and system environments for increased bandwidth and resilience Employed in switches, routers, servers, and data center networks Traffic is distributed across member links while the network…
Key Points Secure Tunneling is defined for network or system use. Protected tunnel for traffic across an untrusted network. Used in operational and architecture contexts. Secure tunnels can provide confidentiality, integrity, or both depending on the design. Definition Secure Tunneling…
Key Points Uses multiple elements with precise phase control to steer beams Steers beams electronically without mechanical pointing Common in radar, satellite communications, wireless systems, and advanced sensing Supports agile pointing and tracking across changing conditions Definition Phased Array Antenna…
Key Points Processes data onboard close to the source Reduces latency and bandwidth dependence Supports autonomy and local analytics Enables filtering, event detection, caching, and local control logic Operates in maritime environments with constraints on power, heat dissipation, hardware durability,…
Key Points Produced by nonlinear RF behavior in devices and signal paths Creates unwanted mixing products at new frequencies not present in original signals Degrades spectral purity and channel separation Primary concern in crowded spectrum environments with multiple simultaneous signals…
Key Points Used for IPv6 routing Shares link-state topology information Supports fast convergence Extension of OSPF for IPv6 environments Definition OSPFv3 is the IPv6 version of the OSPF link-state routing protocol used to exchange routing information within an autonomous system.…
