Subsistemas de carga, telemetria e comunicação para CUBESAT

Abstract

This work presents the development and validation of a 2U CubeSat nanosatellite designed for the CubeDesign competition, promoted by the National Institute for Space Research (INPE). The project focuses on the construction, integration, and evaluation of the Structural, Electrical Power System (EPS), and Communication subsystems, meeting the functional and environmental requirements established by INPE. The adopted methodology involved the study of CubeSat standards, digital modulation techniques, energy management strategies, and the use of Commercial Off-The-Shelf (COTS) components. The development process included the mechanical modeling of a hybrid structure composed of aluminum and polymer materials, the design of the energy generation, storage, and monitoring system, and the integration of a radiofrequency communication system aimed at telemetry and experimental reception of AIS (Automatic Identification System) signals. Satellite validation was conducted through environmental tests, including vibration and thermal cycling, as well as functional bench tests, enabling the assessment of structural robustness, energy performance, and subsystem operation. The results demonstrate that the developed platform is technically viable for academic and experimental missions, achieving satisfactory performance in critical tests. The main limitations identified are related to the complexity of radiofrequency signal processing for AIS applications, indicating the need for future improvements in hardware and communication architecture. This work contributes to the consolidation of engineering practices applied to CubeSats and to technical training.