Control dynamics
Performance comparison of adaptive and ESO-based backstepping controllers for disturbance rejection in spacecraft

Somayeh Jamshidi; mehdi mirzaei

Volume 3, Issue 2 , February 2024, , Pages 32-45

  This paper compares spacecraft attitude control in the presence of disturbance torque using an adaptive backstepping controller and an extended state observer-based backstepping controller. Firstly, the adaptive backstepping controller is designed, in which the unknown parameters in a specific disturbance ...  Read More

Control dynamics
Experimental Identification of Satellite Antenna Dynamics

Ehsan Maani miandoab; Ehsan Zabihian; Hossein Najafi

Volume 1, Issue 1 , September 2021, , Pages 1-12

  In all types of satellites, communication systems are utilized for data transmission between satellite and ground stations. pointing the communication antennas to the ground is necessary for the correct mission transmission information. The vibration of the satellite antenna leads to deforming antenna ...  Read More

Flight dynamics
Imaged Based Earth Horizon Sensor with no Altitude Information

Behrooz Raeisy; Fatemeh Ghofrani

Volume 1, Issue 1 , September 2021, , Pages 53-64

  Various sensors can be used to attitude determination of a satellite, including the Earth Horizon Sensor. These sensors generally divided into two types: static and scanning types. In the static type, two- dimensional array or several linear arrays capture instantly the Earth image information to attitude ...  Read More