Evaluation the disturbances effects capable of altering the orbit of the BiomeSat satellite

Abstract

If the effect of orbital perturbations were not considered, the orbit of an artificial satellite would remain fixed in a fixed plane, in a conical shape (ellipse, parabola or hyperbola), defined by the initial conditions at the instant in which the satellite is injected into orbit. However, in practice, the size and shape of the orbit do not remain constant, since the action of disturbing forces changes the satellite's velocity and, consequently, the orbital movement. Therefore, this work will present a study of the effects of the main disturbances capable of altering the orbit of the BiomeSat Mission satellite, which is being developed by the National Institute for Space Research (INPE). The BiomeSat Mission aims to perform remote sensing to provide data for planning, monitoring and controlling the health conditions of Brazilian forests, in addition to assisting in the assessment of degraded and deforested areas. The AOCS subsystem is responsible for carrying out operational control of the propulsion, which is used for orbit correction maneuvers for the BiomeSat mission. It is also the responsibility of the AOCS subsystem to maintain the satellite's attitude and orientation in relation to space, allowing the satellite to comply, in all operating modes, with pointing and stability requirements, as well as orbit acquisition and maintenance requirements. The analysis to be presented is extremely important for a mission project, as it is capable of sizing the fuel consumption necessary to mitigate the effects of disturbances in the artificial satellite's orbit and maintain the orbit so that mission requirements can be achieved.