Journal of Space Science and Technology

Journal of Space Science and Technology

Extensive Regional Telecommunications Coverage in Emergency Condition Using Tethered-Balloon Equipped with Antenna Pointing Mechanism – Part 1: Kinematic and Dynamic Modeling

Document Type : Original Research Paper

Authors
Mohammad Fathi 1
Javad Ranjbar 2
1 Ph.D. Candidate‎, Department of Electrical Engineering Department. Iran University of Science and Technology . Tehran. Iran
2 Assistant Professor‎, Department of Electrical Engineering - Khatam Al-Anbia University ,Tehran, Iran
10.30699/jsst.2022.1312
Abstract
In emergency situations, where there is no possibility of using terrestrial-based or space-based telecommunication platforms or when there is a need for providing telecommunication services in remote, rural or hilly areas which are faced with lacking telecommunication infrastructures, typically using tethered balloon-based telecommunication technology is the best choice. Despite all the advantages of using this technology, small and limited coverage area is the biggest drawback of using tethered balloon platforms. In this paper, using a tethered balloon equipped with antenna pointing mechanism is proposed in order to, extend their small coverage area to a large region, in addition to benefit from inherent tethered balloons technology advantages. In this regard, dynamic and kinematic modeling of the proposed antenna pointing mechanism is discussed. In this research, the kinematic model is validated using RoboAnalyzer software and Robotics MATLAB toolbox. Antenna pointing mechanism provides the rotation ability for the antenna in two Azimuth and Elevation directions which increased the coverage area dramatically.
Keywords
Kinematic modeling
Antenna pointing mechanism
Tethered balloon
Coverage area enlargement
Subjects

Article Title Persian

پوشش دهی مخابراتی منطقه ای وسیع در شرایط اورژانسی با استفاده از بستر بالن مقید مجهز به مکانیزم نشانه روی آنتن – بخش اول: مدل سازی سینماتیکی و دینامیکی

Authors Persian

محمد فتحی 1
جواد رنجبر 2
1 دانشجوی دکتری، دانشکده مهندسی برق، دانشگاه علم و صنعت ایران، تهران، ایران
2 استادیار، دانشکده مهندسی برق، دانشگاه خاتم الانبیاء، تهران، ایران
Abstract Persian

در شرایط اورژانسی که امکان استفاده از بسترهای مخابراتی زمینی یا فضایی وجود ندارد و یا در شرایطی که نیاز به برقراری ارتباطی مخابراتی در مناطقی دورافتاده که فاقد بسترهای مورد نیاز مخابراتی هستند وجود دارد، به طور معمول از فناوری بالن‌های مقید برای تبادل اطلاعات استفاده می‌گردد. فناوری بالن‌های مقید علی‌رغم تمام مزایایشان، دارای عیب قابلیت پوشش‌دهی منطقه‌ای کوچک هستند. در این مقاله، به منظور بهره‌گیری همزمان از مزایای بالن‌های مقید و پوشش‌دهی یک منطقه‌ی وسیع، استفاده از یک بالن مجهز به مکانیزم نشانه‌روی آنتن پیشنهاد شده و به مدل‌سازی سینماتیکی و دینامیکی مکانیزم پیشنهادی پرداخته شده است. در این کار مدل سینماتیکی استخراج شده توسط نرم‌افزار‌ RoboAnalyzer و همچنین تولباکس Robotics از نرم‌افزار MATLAB مورد اعتبارسنجی قرار گرفته است. مکانیزیم مدل‌سازی شده قابلیت دوران در دو جهت قوس‌افقی و قوس‌عمودی را برای آنتن فراهم می‌آورد و بدین ترتیب ناحیه تحت پوشش آنتن را به طور چشمگیری افزایش می‌دهد.

Keywords Persian

مدل‌سازی سینماتیکی
مکانیزم نشانه‌روی آنتن
بالن مقید
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  • Receive Date 26 October 2020
  • Revise Date 30 May 2021
  • Accept Date 29 June 2021
  • First Publish Date 30 June 2021