Studies on the Functionality of On-Board Computer in 1U CubeSat

The paper studies the various functionality of the On-Board Computer (OBC) used in 1U CubeSat for Leo orbit. The OBC in CubeSat is responsible for controlling and managing all the subsystems of the Spacecraft. The functionality includes modes of operations of the satellite, socket programming that is used to communicate between subsystems, user datagram protocol as transportation layer protocol between different subsystems, and hardware to visualize the functional working of the satellite. The modes of operation is timer based and implemented using Java in Visual Studio (VS) code platform that acts as a real-time operating system (RTOS) of the satellite. The Nested socket programming between various subsystems was developed in Java finally the functionality of Lora was implemented through Arduino board. The packet transfer between each subsystem is analyzed using packet tracer software. The functionalities were successfully studied implemented and analyzed about the onboard computer