Session
Technical Session VI: The Future
Abstract
Dosimeter Satellite (D-SAT) is an ATSB in-house built nano-satellite platform that supports the operations of a dosimeter payload. D-SAT’s orbit is targeted at a normal altitude of 750 km and 6 degree inclination. The dosimeter is designed to collect the radiation dosage in a Near Equatorial Orbit (NEqO). The design philosophy of D-SAT is to ‘Keep it Simple’, weighing only 14 kg and 230 x 230 x 290mm in size. This paper describes the trade study and simulations carried out to evaluate the altitude stability achievable during acquisition and housekeeping phases, using either permanent magnets or magnetic-torques as actuators and magnetometers as dedicated altitude sensors. An alternative to attitude observations without sensors and the B-Dot algorithm coupled to a B-field rate observation algorithm to achieve 3-axis spin rate control to any desired rate are also described.
D-SAT Simplified Magnetic Attitude Control
Dosimeter Satellite (D-SAT) is an ATSB in-house built nano-satellite platform that supports the operations of a dosimeter payload. D-SAT’s orbit is targeted at a normal altitude of 750 km and 6 degree inclination. The dosimeter is designed to collect the radiation dosage in a Near Equatorial Orbit (NEqO). The design philosophy of D-SAT is to ‘Keep it Simple’, weighing only 14 kg and 230 x 230 x 290mm in size. This paper describes the trade study and simulations carried out to evaluate the altitude stability achievable during acquisition and housekeeping phases, using either permanent magnets or magnetic-torques as actuators and magnetometers as dedicated altitude sensors. An alternative to attitude observations without sensors and the B-Dot algorithm coupled to a B-field rate observation algorithm to achieve 3-axis spin rate control to any desired rate are also described.
