مدل سازی الکترومغناطیسی کره رسانا برای شبیه سازی سیگنال دریافتی در رادار مشاهده گر از پشت دیوار

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه شیراز

2 شیراز

چکیده

رادار مشاهده‌گر از پشت دیوار، راداری نسبتا جدید با برد کوتاه است که از امواج الکترومغناطیسی برای کشف اهداف پشت دیوار استفاده می‌کند. در شبیه سازی و همچنین در عمل، کره‌ی رسانا به خاطر تقارنی که دارد اغلب به عنوان یک بازتابنده‌ی مرجع برای کالیبراسیون سیستم‌های راداری مورد استفاده قرار می‌گیرد. در این مقاله برای شبیه سازی سیگنال دریافتی در رادار مشاهده‌گر از پشت دیوار، ابتدا مدل میدان الکتریکی بازتابی از کره‌ی رسانا در فضای آزاد مورد بررسی قرار گرفته است. سپس با مدل سازی دیوار به صورت صفحه‌ی دی الکتریک ، مدلی از کره‌ی رسانا در پشت دیوار ارائه شده است. برای تصویر سازی کره‌ی رسانا در پشت دیوار بتنی، از الگوریتم RMA استفاده شده و تصویری از کره واقع در پشت دیوار بدست آمده است. نتایج شبیه سازی مناسب بودن مدل بکار رفته برای کره و همچنین دیوار را برای کاربرد مورد نظر نشان می‌دهد.

کلیدواژه‌ها


عنوان مقاله [English]

Electromagnetic Modeling of Conducting Sphere for Received Signal Simulation of See Through the Wall Radar

نویسندگان [English]

  • Hamidreza Dehghan Menshadi 1
  • mehrzad biguesh 2
  • Mohammad Ali Masnadi Shirazi 1
1
2 shirazu
چکیده [English]

See Through the Wall Radar, is a relatively new small range radar that uses electromagnetic waves to detect targets behind wall. Because of its symmetry, a conducting sphere is often used as a reference scatterer to calibrate radars and measure the scattering properties of other radar targets. In this paper, to simulate received signal for see through the wall radar, scattering model of a conducting sphere in free space is presented. Then using a dielectric sheet to represent the wall between the radar system and the sphere behind it, scattering model of a sphere behind the wall, is developed. To create the image of sphere behind the concrete wall using the signals acquired with the proposed model, Range Migration Algorithm (RMA) and coherent background subtraction is used and an image of sphere behind wall has been achieved. Simulation results reveals the suitability of the proposed model for See Through the Wall Radar received signal simulation.

کلیدواژه‌ها [English]

  • See Through Wall
  • Range Profile
  • Conducting Sphere
  • Concrete Wall
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  • تاریخ دریافت: 21 فروردین 1395
  • تاریخ بازنگری: 02 بهمن 1402
  • تاریخ پذیرش: 28 شهریور 1397
  • تاریخ انتشار: 01 مرداد 1395