Aerospace Science and Technology
Investigating the relative motion of two satellites corresponding to the orbital collocation strategy

Fatemeh Amozegary; Amir reza Kosari; Mahdi Fakoor

Volume 16, Issue 1 , June 2023, , Pages 101-114

https://doi.org/10.22034/jast.2023.376290.1142

Abstract
  The ever increasing demand for placing satellites in the geostationary orbit has caused the revision and change of the conventional mechanism of allocating orbital slots. Therefore, collocation approaches and station keeping of several satellites with a common position have been developed to improve ...  Read More

Aerospace Science and Technology
Three-Axis Satellite Attitude Control with Fractional-Order PID Controller in the presence of Uncertainty and Disturbance

Amir reza Kosari; Elahe Khatoonabadi; Vahid Bohlouri

Volume 15, Issue 2 , October 2022, , Pages 84-95

https://doi.org/10.22034/jast.2022.321251.1109

Abstract
  In this paper, the control of a three-axis rigid satellite attitude control system with a fractional order proportional-integral-derivative (PID) controller is investigated in the presence of disturbance and parametric uncertainties. The reaction wheel actuator with the first-order dynamic model is used ...  Read More

Aerospace Science and Technology
natural periodic orbit attitude behavior of satellites in three-body problem in the presence of the oblate primaries

Amir reza Kosari; Ehsan Abbasali; Majid Bakhtiyari; Hamed Golpour

Volume 15, Issue 1 , June 2022

https://doi.org/10.22034/jast.2022.311711.1104

Abstract
  The main purpose of this article is to examine the periodic coupled orbit-attitude of a satellite at restricted three body problem considering both primaries oblateness perturbations. The proposed model was based on a simplified coupled model meaning that the time evolution of the orbital state variables ...  Read More

Aerospace Science and Technology
Intelligent Sensor Fusion in High Precision Satellite Attitude Estimation Utilizing an Adaptive-Network-Based Fuzzy Inference System

Mahdi Fakoor; Hamidreza Heidari; Behzad Moshiri; Amir reza Kosari

Volume 14, Issue 2 , October 2021, , Pages 19-29

https://doi.org/10.22034/jast.2021.134152

Abstract
  In this study, Adaptive Network-Based Fuzzy Inference System (ANFIS) is presented with sensor data fusion approach to estimate satellite attitude. The active sensors are sun and earth sensors. Satellite attitude dynamic, including attitude quaternion and angular velocities are estimated simultaneously ...  Read More

Aerospace Science and Technology
Orbit and Attitude Control of a GEO Satellite in Station Keeping Flight Mode

Amir reza Kosari; Alireza Akbar Attar; Peyman Nikpey

Volume 14, Issue 2 , October 2021, , Pages 131-140

https://doi.org/10.22034/jast.2021.277629.1060

Abstract
  In this study, the performance requirements influencing the orbital and attitude control system of a geostationary satellite in the station-keeping flight mode considering the coupling effect of both attitude and orbital motion is determined. Controlling and keeping the satellite in its orbital window ...  Read More

Aerospace Science and Technology
Optimal decision making in designing an Earth observation mission with considering the technical challenges of the platform and the impossibility of injection into the sun-synchronous orbit

Asad Saghari; Amirreza Kosari; Masoud Khoshsima

Volume 14, Issue 1 , June 2021, , Pages 73-83

https://doi.org/10.22034/jast.2021.308893.1100

Abstract
  This paper deals with the problem of optimal selection of orbital parameters for an Earth observation mission in the absence of the possibility of injection into sun-synchronous orbit by considering the requirements and limitations of the mission and the satellite platform. By modeling the existing relationships ...  Read More

Aerospace Science and Technology
Restricted Three-Body Problem Considering Perturbations of Oblate Primaries

Ehsan Abbasali; Amir reza Kosari; Majid Bakhteiari

Volume 13, Issue 2 , October 2020, , Pages 27-35

https://doi.org/10.22034/jast.2021.128013

Abstract
  In this paper, the effect of perturbations of oblate primaries in the Circular Restricted Three-Body Problem is studied, and the equations of satellite orbital motion in the Circular Restricted Three-Body Problem are developed by employing Lagrangian mechanics. Since the equations have no closed-form ...  Read More

Aerospace Science and Technology
Investigating cooperative and non-cooperative interference elimination between aircraft using game theory

Amir reza Kosari; Masoud Mirzaei Tashenizi

Volume 13, Issue 2 , October 2020, , Pages 103-113

https://doi.org/10.22034/jast.2021.127948

Abstract
  This article is aimed to investigate the interference elimination between multiple aircraft using game theory. A differential game is used to eliminate the interference if all the interfering aircraft cooperate to eliminate the interference or if each makes a rational decision based on their own interests. ...  Read More

Position Based Impedance Control on Space Docking

Amirreza Kosari; Javad Bahremandjouy

Volume 11.1, Issue 1 , June 2018, , Pages 14-21

https://doi.org/10.22034/jast.2018.145181

Abstract
  In this paper, a Force Control Solution on Space Docking is proposed providing low impact and safe connection between space modules in different missions. In this solution, the force control concept has been employed along with traditional position control in space docking process  because the interaction ...  Read More