تصویربرداری سه‌بعدی رادار دیوارگذر با استفاده از روش حسگری فشرده

صالحی برزگر, علیرضا; چلداوی, احمد

تصویربرداری سه‌بعدی رادار دیوارگذر با استفاده از روش حسگری فشرده

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ دانشجوی دکترا، دانشکده برق، دانشگاه علم وصنعت، تهران، ایران

² استاد، دانشکده برق، دانشگاه علم وصنعت، تهران، ایران

چکیده

یکی از روش‌های اصلی استخراج تصویر سه‌بعدی از اطلاعات دریافتی در رادارهای دیوارگذر، روش توموگرافی پراشی (DT) است. در این روش به خاطر تعداد زیاد اندازه‌گیری میدان‌های دریافتی، زمان دریافت اطلاعات و استخراج تصویر قابل‌ملاحظه است. روش حسگری فشرده (CS) برای کاهش اندازه‌گیری‌ها و صرفه‌جویی زمانی دریافت اطلاعات در کاربردهای راداری مورد استفاده قرار می‌گیرد. شرط لازم برای اعمال این روش تنک بودن بردار هدف است. در این مقاله نشان می‌دهیم با استفاده از روش CS و تبدیل فوریه غیریکنواخت (NUFFT) سرعت اندازه‌گیری و پردازش روش DT به‌طور قابل‌ملاحظه‌ای افزایش خواهد یافت. شبیه‌سازی و نتایج اندازه‌گیری اعتبار روش تصویربرداری را تأیید می‌کند.

کلیدواژه‌ها

20.1001.1.23454024.1398.7.2.11.1

عنوان مقاله [English]

Three Dimensional Through the Wall Radar Imaging Using Compressed Sensing

نویسندگان [English]

Alireza Salehi Barzegar ¹
Ahmad Cheldavi ²

¹ PhD student, Faculty of Electrical Engineering, University of Science and Technology, Tehran, Iran

² Professor, Faculty of Electrical Engineering, University of Science and Technology, Tehran, Iran

چکیده [English]

In this paper, the compressive sensing (CS) method is used in the through the wall radar imaging (TWRI) to reduce the measurement points and data acquisition time, consequently. In fact, the large required amount of measurement points is considered as one of the main challenges in TWRI which can be mitigated by this proposed method. The diffraction tomography (DT) method is the most effeicient conventional method used in TWRI process. By exploiting the advantages of the CS and non uniform fast Fourier transform (NUFFT), the effectiveness and speediness of the DT method is signiﬁcantly increased. Simulation and experiment results have veriﬁed the validity of the proposed imaging method.

کلیدواژه‌ها [English]

through-the-wall radar imaging (TWRI)
diffraction tomography (DT)
Compressed Sensing (CS)
Nonuniform fast Fourier transform (NUFFT)

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