Non-Terrestrial

Software Defined Payload Software Defined Payload is a communications payload whose functions are controlled, configured, or reconfigured through software rather than being fixed entirely by hardware design. Hardware Solar Array Solar Array is a group of solar cells arranged to convert sunlight into electrical power. It provides photovoltaic energy generation. Hardware Space Segment Space Segment is the portion of a satellite system located in space, including spacecraft, payloads, and orbiting assets that provide the service. Hardware Space Systems Space systems are the collection of spacecraft, ground segments, mission control functions, and supporting infrastructure used to operate a mission in the space environment. The term includes the architecture required… Concept/Framework Spacecraft A spacecraft is a hardware platform intended to operate in the space environment and perform a mission such as communications, sensing, navigation, or experimentation. It includes the structural, power, control,… Hardware Spectrum Sensing The process of detecting the presence, absence, and characteristics of RF activity on a candidate frequency channel, used to determine whether that channel is available for secondary or opportunistic use… Operations Spoofing The deliberate transmission of falsified signals designed to deceive a receiving system into accepting fabricated data as genuine, most commonly counterfeit GNSS signals reporting false position or time information. Concept/Framework Spot Beam Spot Beam is a narrow, focused satellite or radio beam that concentrates energy on a limited geographic area. It provides localized coverage with higher directional gain. Hardware Star Tracker Star Tracker is an optical attitude sensor that determines spacecraft orientation by identifying stars in its field of view and comparing observed star positions with an internal catalog to compute… Hardware Station Keeping Station Keeping is the operational process of maintaining a spacecraft or satellite within its assigned orbital position and attitude limits through periodic maneuvers and corrections. Operations