Satellite Subsystems

Satellites consist of various subsystems that work together to accomplish their designated tasks. Here are some of the crucial subsystems that are typically present in a satellite: 

Power subsystem: This subsystem consists of solar arrays that generate power for the satellite and batteries to store excess power for use during periods of reduced sunlight or eclipses. 

Communication subsystem: This subsystem consists of antennas, transmitters, and receivers allowing the satellite to establish communication with the ground and other satellites. 

Attitude control subsystem: This subsystem involves sensors, reaction wheels, and thrusters to control the satellite's orientation and maintain its stability. 

Thermal control subsystem: This subsystem includes radiators, heaters, and insulation to regulate the satellite's temperature and shield it from extreme temperature fluctuations. 

Command and data handling subsystem: This subsystem incorporates computers, software, and data storage devices responsible for managing the satellite's operations, processing data collected by satellite instruments, and transmitting the data to the ground. 

Payload subsystem: This subsystem comprises instruments and sensors specifically designed to carry out the satellite's designated mission tasks, such as Earth observation or navigation. 

Satellite subsystems are typically designed to operate autonomously, with redundancy and fault tolerance implemented to ensure the satellite's continuous functionality, even in the event of subsystem failures.