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    Article

    An optimal deployment strategy for multi-plane satellite constellation using a generalized non-planar maneuver

    Satellite constellation deployment is a cohesive mission where the trajectories of satellites must be planned concurrently. This paper presents an Integrated Program for Optimal Deployment of a Satellite Const...

    Majid Bakhtiari, Ehsan Abbasali in Astrophysics and Space Science (2024)

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    Article

    Distinguishing periodic attitude motions from Poincaré sections using a compatible clustering method

    Periodic attitude motions are used to reduce the fuel cost of space missions as they can lessen the need for constant pointing adjustments. One way to detect these evasive motions is by using Poincaré sections...

    Siavash Sabzy, Majid Bakhtiari, Elyas Rashno in Nonlinear Dynamics (2024)

  3. No Access

    Article

    Minimum Cost Perturbed Multi-impulsive Maneuver Methodology to Accomplish an Optimal Deployment Scheduling for a Satellite Constellation

    The optimal design of a satellite constellation is a highly constrained, multidisciplinary problem. The satellite constellation requires a flexible optimal deployment algorithm that can consider constraints an...

    Majid Bakhtiari, Ehsan Abbasali in The Journal of the Astronautical Sciences (2023)

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    Article

    Natural coupled orbit—attitude periodic motions in the perturbed-CRTBP including radiated primary and oblate secondary

    This study investigated periodic coupled orbit—attitude motions within the perturbed circular restricted three-body problem (P-CRTBP) concerning the perturbations of a radiated massive primary and an oblate se...

    Majid Bakhtiari, Ehsan Abbasali, Siavash Sabzy, Amirreza Kosari in Astrodynamics (2023)

  5. No Access

    Article

    Relative attitude tracking of two satellites in the presence of third-body perturbation and considering actuator saturation

    The Geometric method is one of the nonlinear methods for expressing the large-scale relative motion of satellites. In this paper, the equations of the Geometric method for perturbed orbits have been developed ...

    Saman Zarei, Majid Bakhtiari in Journal of the Brazilian Society of Mechan… (2021)

  6. No Access

    Chapter and Conference Paper

    Fraudulent e-Commerce Website Detection Model Using HTML, Text and Image Features

    Many of Internet users have been the victims of fraudulent e-commerce websites and the number grows. This paper presents an investigation on three types of features namely HTML tags, textual content and image ...

    Eric Khoo, Anazida Zainal in Proceedings of the 11th International Conf… (2021)

  7. No Access

    Article

    Investigation of Low Thrust Optimal Orbital Transfer from LEO to GEO Considering Circular Orbits

    In the present research, optimal control problem for low thrust spacecraft orbital transfer is investigated by combination of analytical method and Artificial Bee Colony (ABC) algorithm, which is a population-...

    Mahdi Fakoor, Sahar Sadeghi, Majid Bakhtiari in The Journal of the Astronautical Sciences (2020)

  8. No Access

    Article

    Perturbed HEO Satellite Hovering Investigation in the Earth-Moon System

    The relative hovering of satellites in highly elliptic orbits (HEO), as one of the most crucial space operations, is modeled and analyzed in this paper. The proposed modeling is based on the new perturbed rela...

    Majid Bakhtiari, Kamran Daneshjou in The Journal of the Astronautical Sciences (2019)

  9. No Access

    Chapter and Conference Paper

    A Robust DCT Based Technique for Image Watermarking Against Crop** Attacks

    Watermarking is a common technique for authentication and message hiding. Watermarking should be invisible and robust to common processing and attacks. This paper presents a robust DCT based technique for imag...

    Mohammad Javad Rajabi, Shahidan M. Abdullah in Recent Trends in Information and Communica… (2018)

  10. No Access

    Article

    Cryptanalysis and improvement of a robust smart card secured authentication scheme on SIP using elliptic curve cryptography

    The session initiation protocol (SIP) has been receiving a lot of attention to provide security in the Voice over IP (VoIP) in Internet and mobility management. Recently, Yeh et al. proposed a smart card-based...

    Mohammad Sabzinejad Farash, Saru Kumari in Multimedia Tools and Applications (2016)

  11. No Access

    Chapter and Conference Paper

    Selection of Soil Features for Detection of Ganoderma Using Rough Set Theory

    Ganoderma boninense (G. boninense) is one of the critical palm oil diseases that have caused major loss in palm oil production, especially in Malaysia. Current detection methods are based on molecular and non-...

    Nurfazrina Mohd Zamry, Anazida Zainal in Pattern Analysis, Intelligent Security and… (2015)

  12. Article

    Open Access

    Timoshenko beam model for buckling of piezoelectric nanowires with surface effects

    This paper investigates the buckling behavior of piezoelectric nanowires under distributed transverse loading, within the framework of the Timoshenko beam theory, and in the presence of surface effects. Analyt...

    Arash Tourki Samaei, Majid Bakhtiari, Gang-Feng Wang in Nanoscale Research Letters (2012)