Home | Education | Affiliations | Research | Honors and Awards | Publications | Contact

Abolfazl Shirazi

Ph.D.


I am a Postdoctoral Researcher at BCAM - Basque Center for Applied Mathematics. In 2016, I was awarded the La Caixa Fellowship Grant for my doctoral studies and in 2021 I obtained my Ph.D. degree with “Sobresaliente Cum Laude” distinction award from the University of the Basque Country UPV/EHU. My research interests are Astrodynamics and Machine Learning and my activities mainly involve spacecraft trajectory optimization, evolutionary computations, space dynamics and control, numerical simulation, orbital mechanics, meta-heuristics, and software development for space simulation.


Research


Orbital Mechanics

Orbit Propagation
Orbital Maneuvers
Trajectory Optimization
Interplanetary Transfers

Machine Learning

Metaheuristics
Continuous Optimization
Evolutionary Algorithms
Clustering

Spacecraft Dynamics

Spacecraft Guidance
Satellite Attitude Control
Space Mission Analysis
G.N.C Systems

3D
Simulation

3D Visualization
Software Development
3D Design & Modeling
Realtime Simulation

Featured Articles


EDA++: Estimation of Distribution Algorithms with Feasibility Conserving Mechanisms for Constrained Continuous Optimization
Shirazi, A., Ceberio, J. and Lozano, J.A.
IEEE Transactions on Evolutionary Computation (2022)
DOI: 10.1109/TEVC.2022.3153933
Abstract:
Handling non-linear constraints in continuous optimization is challenging, and finding a feasible solution is usually a difficult task. In the past few decades, various techniques have been developed to deal with linear and non-linear constraints. However, reaching feasible solutions has been a challenging task for most of these methods. In this paper, we adopt the framework of Estimation of Distribution Algorithms (EDAs) and propose a new algorithm (EDA++) equipped with some mechanisms to deal with non-linear constraints. These mechanisms are associated with different stages of the EDA, including seeding, learning and mapping. It is shown that, besides increasing the quality of the solutions in terms of objective values, the feasibility of the final solutions is guaranteed if an initial population of feasible solutions is seeded to the algorithm. The EDA with the proposed mechanisms is applied to two suites of benchmark problems for constrained continuous optimization and its performance is compared with some state-of-the-art algorithms and constraint handling methods. Conducted experiments confirm the speed, robustness and efficiency of the proposed algorithm in tackling various problems with linear and non-linear constraints.

Spacecraft trajectory optimization: A review of models, objectives, approaches and solutions
Shirazi, A., Ceberio, J. and Lozano, J.A.
Progress in Aerospace Sciences 102 (2018): 76-98
DOI: 10.1016/j.paerosci.2018.07.007
Abstract:
This article is a survey paper on solving spacecraft trajectory optimization problems. The solving process is decomposed into four key steps of mathematical modeling of the problem, defining the objective functions, development of an approach and obtaining the solution of the problem. Several subcategories for each step have been identified and described. Subsequently, important classifications and their characteristics have been discussed for solving the problems. Finally, a discussion on how to choose an element of each step for a given problem is provided.


E-mail:
  • ashirazi@bcamath.org
  • ashirazi@homasim.com
Contact:
  • Tel: +34 946 567 842
  • Fax: +34 946 567 843
Address:
    Mazarredo, 14, 48009
    Bilbao, Spain
Mendeley LinkedIn ResearchGate YouTube Instagram Facebook
Copyright © 2014-2022 by Abolfazl Shirazi. All Rights Reserved.