ارزیابی اثر تغییر رفتار عامل مهاجم بر پوشش مکانی - زمانی مناطق مرزی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 همکار پژوهشی / مجتمع دانشگاهی هوافضا، دانشگاه صنعتی مالک‌اشتر

2 عضو هیات علمی / مجتمع دانشگاهی برق و الکترونیک، دانشگاه صنعتی مالک اشتر

چکیده

این مقاله به افزایش دقت محاسبة میزان پوشش مکانی - زمانی به‌عنوان معیاری برای ارزیابی توانایی یک سیستم نظارت هوایی در مأموریت پوشش مناطق مرزی در طول زمان می­پردازد. محاسبة پوشش مکانی - زمانی و به‌عبارت دیگر تعیین احتمال رویت اهداف متحرک مستلزم در نظر گرفتن سرعت مؤثر عامل مهاجم؛ یعنی اندازة سرعت لحظه­ای در راستای عمود بر مرز می­باشد. در مقالات قبلی، این معیار براساس حداکثر مقدار متوسط سرعت عامل مهاجم محاسبه شده و توانایی ارزیابی اثر تغییرات رفتار عامل مهاجم را نداشت. این مقاله برای ارزیابی دقیق­تر پوشش مکانی - زمانی، تغییر رفتار عامل مهاجم به‌دلیل اطلاع از وجود سیستم هوایی حفاظت از مرز را به‌کمک تابع چگالی احتمال انتخاب سرعت­های مختلف و زمان­های خاص تردد مدل نموده است. نتایج شبیه­سازی نشان می­دهد که محاسبة پوشش مکانی - زمانی با این روش نشان‌دهندة موفقیت بیشتر سیستم نظارت هوایی نسبت به استفاده از روش معمول محاسبه پوشش می­باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Evaluation of the effects of the intruder's behavioral change on the spatiotemporal coverage

نویسندگان [English]

  • Mohammad Ali Ansari 1
  • Seyyed Mohammad Mehdi Dehghan 2
چکیده [English]

This paper investigates the correctness of the spatiotemporal coverage as a suitable criterion for performance evaluation of a border patrolling algorithm. This criterion, which determines the probability of the intruder observation, shows the coverage of different points of the border during a period of time. Spatiotemporal coverage depends on the effective velocity of the intruder which means the magnitude of the instantaneous velocity perpendicular to the border. In the previous research, the maximum of the average velocity of the intruder is used to calculate the spatiotemporal coverage. Computing this criterion in this manner can’t show the effect of the behavior change of the intruder on the spatiotemporal coverage and won't provide a correct evaluation of the border patrolling capability of the system. This paper tries to represent a better assessment of the coverage using probability density function for the intruder's uncertain behaviors in selecting different passage times and speeds. Simulation result shows that the calculation of the spatiotemporal coverage with this approach provides a better evaluation of aerial surveillance capability in comparison to the traditional methods of coverage evaluation.

کلیدواژه‌ها [English]

  • UAV
  • border patrolling system
  • arial surveillance
  • spatiotemporal coverage
  • intruder
  • probability density function

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