// ORBITAL LOGISTICS AND PROPULSION TERM
Loss of Signal
Loss of Signal (LOS) occurs when ground control can no longer receive telemetry or send commands to a spacecraft, often due to the spacecraft moving out of range or behind a celestial body.
TECHNICAL DEFINITION
Loss of Signal (LOS) is the cessation of radio communication between a spacecraft and its ground station, typically due to orbital mechanics (e.g., occultation by Earth or another body), antenna pointing issues, or system malfunction, preventing telemetry reception and command transmission.
BACKGROUND
Materiel or matériel is supplies, equipment, and weapons in military supply-chain management, and typically supplies and equipment in a commercial supply chain context.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Signal Loss
- Comms Out
- Blackout
- Radio Silence
USAGE NOTE
The spacecraft experienced a planned loss of signal as it passed behind Mars.
DEVELOPERS
Organizations developing technology related to Loss of Signal.
Develops and operates the Starlink satellite internet constellation, where managing and preventing loss of signal across thousands of satellites and ground stations is a core engineering challenge for continuous global connectivity.
Conducts numerous deep-space and orbital missions, developing sophisticated communication systems and protocols to maintain contact with distant probes and human missions, and mitigate the impact of signal loss over vast distances.
A major aerospace manufacturer that designs and builds advanced communication satellites and spacecraft, incorporating resilient systems to prevent and manage signal disruptions for critical national security and commercial applications.
Operates a global network of ground stations, providing critical services for satellite communication, telemetry, tracking, and control, thereby directly addressing the need to maintain robust signal links and recover from potential loss.
A global communications company that develops advanced satellite communication systems and ground infrastructure designed to provide high-bandwidth, resilient connectivity, and actively works on technologies to prevent and recover from loss of signal events.
Engages in a wide range of space missions, from Earth observation to deep-space exploration, requiring the development and implementation of robust communication architectures and strategies to minimize and manage loss of signal.
Designs and builds advanced spacecraft and communication payloads for various missions, integrating technologies for reliable signal transmission and reception, and developing solutions for signal integrity and resilience to avoid loss of signal.
A leading global satellite operator providing communication services worldwide. Their core business relies on maintaining uninterrupted satellite links, driving the development and deployment of technologies to ensure signal availability and recover from outages.