ارایه ساختار پیشنهادی از منظومه ماهواره ای Starlink به منظور ارایه سرویس اتصال مستقیم به گوشی برای ایران

نوع مقاله : علمی-پژوهشی

نویسندگان

1 استادیار پژوهشی، گروه ارتباطات ماهواره‌ای، پژوهشکده فناوری ارتباطات، پژوهشگاه ارتباطات و فناوری اطلاعات، تهران، ایران

2 دانشیار پژوهشی، گروه ارتباطات رادیویی، پژوهشکده فناوری ارتباطات، پژوهشگاه ارتباطات و فناوری اطلاعات، تهران، ایران

چکیده

امروزه، اکثر شرکت ها و ارایه دهندگان خدمات ماهواره‌ای بدنبال افزایش تعداد ماهواره‌ها در قالب منظومه ماهواره ای به منظور گسترش سطح پوشش دهی و نهایتا افزایش ظرفیت در ارایه سرویس اتصال مستقیم ماهواره به گوشی برای کاربران زمینی می باشند. در این میان، منظومه Starlink با تعداد بیشتر ماهواره پرتابی و برنامه ریزی شده با قابلیت ارایه این سرویس، عملیاتی تر می باشد. به همین منظور، در این پژوهش، به بررسی نحوه بکارگیری منظومه ماهواره ای Starlink با 220 ماهواره در 22 صفحه مداری (10 ماهواره در هر صفحه) برای ارایه این نوع سرویس در کشور ایران پرداخته شده است. برای بررسی عملکرد Starlink پارامترهایی مانند تعداد دفعات دسترسی، مدت زمان سرویس دهی، میزان پوشش دهی، ظرفیت قابل حصول و میزان دسترس پذیری برای کشور ایران و به طور خاص شهر تهران پرداخته شده است. نهایتا، با توجه به بکارگیری باندهای فرکانسی یکسان ماهواره Starlink و AST 2000 MHz، تداخلات احتمالی این دو ماهواره بر حسب تابع توزیع تجمعی در سناریوی کوتاه مدت و بلند مدت و همچنین میزان تغییرات دمایی در گیرنده نسبت به دمای اولیه، بررسی شده است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Providing of the Proposed Structure of the Starlink Satellite System to Provide Direct to Cell Connection Service for Iran

نویسندگان [English]

  • Pedram Hajipour 1
  • Roghieh Karimzadeh Baee 1
  • Leila Mohammadi 1
  • Hossein Samimi 2
  • Marzieh Ahmadi 1
1 Assistant Professor, Satellite Communication Group, Faculty of Communications Technology, ICT Research Institute, Tehran, Iran
2 Associate Professor, Radio Communication Group, Faculty of Communications Technology, ICT Research Institute, Tehran, Iran
چکیده [English]

Today, most companies and satellite service providers are looking to increase the number of satellites in the form of a satellite constellation in order to expand the coverage area and ultimately increase the capacity in providing direct satellite-to-device communication services for terrestrial users. Meanwhile, the Starlink constellation with a larger number of launched and planned satellites capable of providing this service is more operational. For this purpose, in this research, the method of using the Starlink satellite constellation with 220 satellites in 22 orbital planes (10 satellites in each plane) to provide this type of service in Iran has been studied. To examine the performance of Starlink, parameters such as the number of accesses, service duration, coverage, achievable capacity, and accessibility have been examined for the country of Iran, and specifically the city of Tehran. Finally, considering the use of the same frequency bands of the two types of Starlink and AST 2000 MHz satellites, the possible interferences of these two satellites have been investigated in terms of the cumulative distribution function in the short-term and long-term scenarios, as well as the amount of temperature changes in the receiver compared to the initial temperature.

کلیدواژه‌ها [English]

  • Mobile phone
  • Satellite constellation
  • Capacity
  • Link availability
  • Geographical coverage
  • Interference
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