Key Points Basic data unit in Ethernet Includes addressing and integrity information Used for local network delivery Works with switches and NICs Packages data so local devices and switches can deliver it within a broadcast domain Definition Ethernet Frame is…
Key Points Tracks link health and availability Supports proactive recovery and continuity Used in satcom and resilient networking Detects degradation and confirms path quality Definition Link Assurance is the effort to verify, monitor, and maintain the quality and availability of…
Key Points Reduces signal observability Can support protective or stealthy operation Used in contested communications Involves power control, shaping, timing, or spectral behavior Definition Signal Masking is the use of spectral, timing, or power behavior that makes a signal harder…
Key Points Used at the data-link layer for local network interface identification Identifies network interfaces on Ethernet, Wi-Fi, and similar networks Critical for switching and local frame delivery before IP-layer routing Subject to spoofing, duplication, and vendor assignment conventions Local…
Key Points Protects command messages in transit Supports authenticated control operations Important for spacecraft and remote assets Combines authentication, encryption, and access control Definition Secure Telecommand Channel is a protected command path that ensures telecommand messages are authenticated, controlled, and…
Key Points Supports mobile or deployed operations Often uses portable and resilient systems Important in Government & Defence, emergency response, and expeditionary work Depends on portable radios, terminals, relays, and hardened links Operates in environments with power constraints, mobility challenges,…
Key Points Demodulates, processes, and remodulates signals inside the payload before retransmission Regenerates signal content in flight rather than passing signals through transparently Enables more flexible routing, channelization, and signal conditioning than simple repeat architectures Used in satellite communications and…
Key Points Moves logbook records electronically Supports reporting and compliance Often occurs during connectivity windows Transmission follows scheduled or event-driven upload patterns Preserves auditable history of entries Definition Electronic Logbook Transmission is the transfer of logbook records from a vessel…
Key Points Transfers data between separated satcom security domains Applies filtering and policy controls at domain boundaries Used where satellite links cross trust boundaries Operates in protected satellite networks, Government & Defence systems, and regulated environments Enables information exchange across…
Key Points Tracks firmware versions and updates Important for device compatibility and security Affects recovery and change control Used in industrial devices, network equipment, embedded systems, and operational technology Includes version tracking, update procedures, and rollback planning Definition Firmware Management…
