System Non-Terrestrial

Solar Array

Key Points – Converts light into electrical energy – Used as a primary power source in many systems – Common in spacecraft and remote installations – Converts photons into electrical current through photovoltaic materials – Output routed into power subsystem…

Chemical Propulsion

Key Points Produces thrust from chemical energy Typically provides higher immediate thrust than electric propulsion Used for maneuvers and launch support Works by combining reactants in a controlled chamber so the reaction creates hot, high-pressure exhaust directed through a nozzle…

Information Assurance For Satcom

Key Points Covers confidentiality, integrity, and availability Applies to satcom systems and traffic Includes policy, monitoring, and protection controls Combines technical protection, operational policy, monitoring, and recovery measures Maintains trustworthy service and data handling in satellite environments Definition Information Assurance…

Direct To Device

Key Points Extends connectivity to endpoint devices Reduces dependence on local infrastructure Common in satellite service design discussions Requires device, spectrum, and network integration Used in remote coverage, emergency response, maritime and field operations Enables satellite-enabled service delivery Definition Direct…

MEO

Key Points Orbit higher than LEO and lower than GEO Used in navigation and some communications systems Has intermediate latency and coverage characteristics Requires orbital planning and constellation design Offers a different balance of latency, coverage, and constellation size compared…

Software Defined Payload

Key Points – Uses software to control payload behavior – Common in flexible satellite systems – Can support reconfiguration in orbit – Increases adaptability of communications payloads – Payload behavior can be changed by software control without replacing hardware –…

Star Tracker

Key Points – Provides precise attitude knowledge – Uses star patterns as an inertial reference – Common in high-accuracy spacecraft control – Works by imaging the sky and matching detected star patterns to an internal catalog – Often paired with…

Power Subsystem

Key Points – Manages generation and distribution of electrical power – Often includes arrays, batteries, and regulation hardware – Supports all onboard loads and control functions – Converts available energy sources into usable electrical power – Buffers power in storage…

Anti Jam Modulation

Key Points Improves link robustness against interference and jamming Often paired with coding, hopping, or power control Used in satcom, Government & Defence communications, and protected links Trades spectral efficiency for resilience and survivability Requires careful balance between protection and…

Look Angle

Key Points Used for pointing and alignment Often paired with azimuth and elevation Common in satellite and tracking applications Depends on reference frame and target geometry Definition Look Angle is the directional angle used to point an antenna, sensor, or…