نوع مقاله : یادداشت تحقیقاتی

نویسندگان

1 استادیار، پژوهشگاه هوافضا، وزارت علوم تحقیقات و فناوری، تهران، ایران

2 کارشناس ارشد، پژوهشگاه هوافضا، وزارت علوم تحقیقات و فناوری، تهران، ایران.

چکیده

هدف این مقاله طراحی منظومة نانوماهواره­های مکعبی ناوبری برای تعیین موقعیت محلی کشور ایران با رویکرد استفاده از قطعات و المان‌های تجاری موجود می‌باشد. در این راستا، ماتریس طراحی نانوماهواره­های مکعبی به منظور تعیین الزامات موقعیت محلی استخراج شده است. ابتدا، با استفاده از پردازش آماری نانوماهواره­های مکعبی با مأموریت مشابه، اطلاعات مربوط به زیرسامانه­های مختلف تعیین می‌شود. سپس، مطابق این پردازش داده­ها، مشخصات کلی زیرسامانه­های مختلف (کنترل وضعیت، کنترل حرارت، تأمین توان، سازه و مخابرات)، اعم از توان، جرم، هزینه و حجم استخراج شده است. در ادامه، با انتخاب محمولة مناسب برای انجام مأموریت مدنظر و بررسی جنبه­های مختلف و ارضای الزامات ماتریس طراحی از کاتالوگ­های زیرسامانه­ها و قطعات تجاری­سازی شده موسوم به "COTS" استفاده شده است. همچنین، پوشش­دهی منظومه نسبت به موقعیت محلی کشور ایران از منظر دسترس‌پذیری نیز در نرم­افزار STK تحلیل و شبیه­سازی شده است. در نهایت، می­توان منظومة ماهواره‌های مکعبی با زیرسامانه­های مشخص (برگرفته از قطعاتCOTS) و درصد پوشش­دهی قابل قبول را برای تعیین موقعیت محلی کشور ایران پیشنهاد نمود.    

کلیدواژه‌ها

عنوان مقاله [English]

Conceptual Design of a Navigation CubeSat for Local Positioning System (Iran Region), Based on COTS Approach

نویسندگان [English]

  • Hassan Naseh 1
  • Safa Dehghan Menshadi 2
  • Mostafa Jafarpanah 2
  • fateme Asdghpour 2
  • Ahmad Ghanbari Motlagh 2
  • Nasrin Sahranavardfard 2

1 Assistant Professor, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

2 M.Sc. Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

چکیده [English]

The main purpose of this paper is to design a navigation CubeSat constellation for local positioning system (LPS) that provides the postiong of Iran, based on COTS approach. To this end, the initial processing of subsystems' information was carried out using statistical processing of CubeSats with the same mission. According to the resultant data, common specifications of different subsystems (structure, electric power, attitude determination and control, thermal control, and communication), including required mass, power, volume and price were determined. Furthemore, the payload design was performed based on the specific mission, design matrix requirements, etc. by utilizing similar subsystem class catalogues (called COTS). Also, local positioning and coverage of the satellite constellation for the Iran was analyzed and simulated from the availabile datd in the Satellite Tool Kit (STK). Finally, the CubeSats constellation with specified subsystem (based on COTS approach) has been suggested for the acceptable coverage percentage to determine the local positioning in Iran. ‌‌

کلیدواژه‌ها [English]

  • Cub-sat
  • Constellation
  • Statistical Design
  • Parametric Design
  • Commercial of the Shelf (COTS)
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