Volume-7 , Issue-6 , Dec 2019, ISSN 2321-3256 (Electronic Version) Go Back

• Open Access   Article

  Communication and Optimization for Satellite Attitudes Using Proportional-Integral-Derivative Controller

  M Raja, Monish Mathur, Ugur Guven, Om Prakash

  Research Paper | Journal (IJSRNSC)

  Vol.7 , Issue.6 , pp.1-6, Dec-2019

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  Abstract
  In the proposed research work to determination of attitude and optimization of control parameters for attitude control and stabilization system. The equations as given to transform Euler angles to Quaternions and vice versa. PID Controller comprises is control loop feedback mechanism. The modelling (MATLAB-SIMULINK) for control parameters are defined and optimized to be actuated via reaction wheels in conjugation with Magneto Torquer. The attitude of the model is determined and then the control equations are adapted so that attitude as stabilized by reaction wheel and the torque rod achieves momentum damping. The stability of the system is demonstrated using Lyapunov function. Numerical simulations has performed on MATLAB to optimize control parameters. Thus, the feasibility and effectiveness of the PID control system as demonstrated.

  Key-Words / Index Term
  Quaternion, PID, Wahba’s Loss Function, Lyapunov function

  References
  [1] Leo satellites: attitude determination and control components; some linear attitude control techniques by Ceren Kaplan.
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  [11] Chris Hall, “HokieSat Attitude and Orbit Dynamics and Control.”, Aeronautics and Astronautics, University of Illinois, March 31, 2003.
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  Citation
  M Raja, Monish Mathur, Ugur Guven, Om Prakash, "Communication and Optimization for Satellite Attitudes Using Proportional-Integral-Derivative Controller," International Journal of Scientific Research in Network Security and Communication, Vol.7, Issue.6, pp.1-6, 2019

• Open Access   Article

  Emerging Cyber Security Threats in Organization

  Hailye Tekleselase Woldemichael

  Research Paper | Journal (IJSRNSC)

  Vol.7 , Issue.6 , pp.7-10, Dec-2019

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  Abstract
  Cyber-security is a preventive preparation of protecting sensitive information, information systems, computers, servers, critical infrastructure, mobile devices, and computer networks from unauthorized access or hackers. Now a day digital technology takes the most significant role in growth effectiveness and efficiency in the organization. However, new technologies like mobile technologies (5G), IoT and cloud computing are Coming with new information security threats. Employees still using the old software, they didn’t update the software (operating system), they use a permanent password, they are still using weak and default password (Wife name or her phone number) information security literacy and behavior end users or IT staff. They don’t have awareness about proactive cyber-attacks prevention policies and procedures. Because they have not took short and long term training on most serious cyber-attacks like ransom ware, social engineering, malware, DDoS, and phishing. This article attempts to assess or explore the most common and emerging cyber security threats. That the organizations facing. An in-depth literature review is delivered. The main objective of this article is to create awareness about the emerging and the most serious cyber-attacks occurring in the organization. The findings demonstrate that cybersecurity preparations and trained employees are very low; hackers becoming more sophisticated.

  Key-Words / Index Term
  Cyber security, Sensitive information, Threats, Information Security

  References
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  Citation
  Hailye Tekleselase Woldemichael, "Emerging Cyber Security Threats in Organization," International Journal of Scientific Research in Network Security and Communication, Vol.7, Issue.6, pp.7-10, 2019

• Open Access   Article

  Handover Decision to Improve the Performance of the Communication System

  Ritu, Hardeep Singh Saini, Dinesh Arora

  Review Paper | Journal (IJSRNSC)

  Vol.7 , Issue.6 , pp.11-15, Dec-2019

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  Abstract
  Wireless networks have been emerged as a great change to communication. Though handover plays a vital role when the network of communication changes. In order to achieve effective communication, there is a requirement of an effective handover with low latency. A significant number of researches have been performed to enhance the handover process (HO). These days, heterogeneous networks also become very popular and handover also plays an important role in communication. In this paper, an overview of different handover techniques used to perform effective operations for drones and other wireless devices so that efficient communication can be performed during changing of access point or base stations. This paper explains how handover can be used to attain better performance of the system by taking effective handover decision in terms of latency, and mobility and cost function.

  Key-Words / Index Term
  Wireless Communication, Handover, Handover Process, Fuzzy Logic, Hard Handover, Soft Handover

  References
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  Citation
  Ritu, Hardeep Singh Saini, Dinesh Arora, "Handover Decision to Improve the Performance of the Communication System," International Journal of Scientific Research in Network Security and Communication, Vol.7, Issue.6, pp.11-15, 2019