نوع مقاله : مقالة‌ تحقیقی‌ (پژوهشی‌)

نویسندگان

دانشکده مهندسی هوافضا، دانشگاه صنعتی خواجه نصیرالدین طوسی، تهران، ایران

چکیده

در این مقاله با هدف استفاده در نرم‌افزارهای طراحی و بسترهای تست حسگر ستاره به شبیه‌سازی تصاویر آسمان شب و حسگر ستاره پرداخته شده است. برای این منظور ابتدا الگوریتمی جامع و دقیق به‌منظور شبیه‌سازی تصاویر آسمان شب بر اساس مدل روزنه ایده‌آل و استفاده از توابع توزیع نقطه‌ای و گاوس ارائه شده است. سپس به‌منظور ایجاد واقع‌گرایی بیشتر، منابع خطاهای اتفاقی و سیستماتیک، کشیدگی تصاویر ناشی از دینامیک بالای سکو و همچنین پخش نامتقارن نور پس‌زمینه ناشی از حضور ماه، خورشید و سیارات منظومه شمسی شبیه‌سازی شده است. درنهایت با توجه به اهمیت واقع‌گرایی در رویکرد شبیه‌سازی حل مسئله، استفاده از روش ردیابی دقیق پرتو به‌عنوان جایگزین روش روزنه ایده‌آل پیشنهاد شده است.

کلیدواژه‌ها

عنوان مقاله [English]

Simulation of Night Sky Images with an Ideal Pinhole Model for a Star Sensor

نویسندگان [English]

  • Amie ali Nikkhah
  • farsahd somayehee
  • Jafar Roshanian

Department of Aerospace Engineering, Khajeh Nasir al-Din Tusi University of Technology, Tehran, Iran

چکیده [English]

In this paper, the aim is to simulate night-sky images for use in star-sensor designing software. For this purpose, a comprehensive and precise algorithm was developed to simulate night sky images based on the ideal pinhole method and the use of Gaussian distribution functions. Then, in order to create more realism, sources of random and systematic errors, the elongated images due to the high dynamics of the platform, as well as the asymmetric back-lighting of the moon, the sun, and the planets of the solar system have been simulated. Finally, considering the importance of realism in the problem-solving simulation approach, the use of precision ray tracking method as an alternative to the ideal pinhole method is suggested.

کلیدواژه‌ها [English]

  • Star sensor
  • Star catalog
  • Celestial sphere
  • Ideal pinhole
  • Ray tracing
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