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محاسبه سطح مقطع راداری آنتن پلاسمایی مغناطیده با سطح مقطع بیضوی | ||
رادار | ||
مقاله 1، دوره 10، شماره 1 - شماره پیاپی 27، تیر 1401، صفحه 1-11 اصل مقاله (887.97 K) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسندگان | ||
سمیه پیریزاد هجراندوست1؛ عباس عبدلی آرانی* 2؛ زینب رحمانی نوش آبادی3 | ||
1دانشجوی دکتری، دانشگاه کاشان، کاشان، ایران | ||
2دانشیار، دانشگاه کاشان، کاشان، ایران | ||
3استادیار، دانشگاه کاشان، کاشان، ایران | ||
تاریخ دریافت: 28 فروردین 1401، تاریخ بازنگری: 10 مرداد 1401، تاریخ پذیرش: 01 شهریور 1401 | ||
چکیده | ||
در این پژوهش پراکندگی امواج الکترومغناطیسی با طول موج بلند از دو ساختار و پیکربندی متفاوت با سطح مقطع بیضوی بررسی می شود. ستون پلاسما در معرض میدان مغناطیسی B0 قرار دارد . در ساختار اول ستون پلاسما بوسیله یک لایه دیالکتریک پوشانده شده است و در ساختار دوم یک هسته دیالکتریک هممحور با ستون پلاسما قرار گرفته و در ستون پلاسما بوسیله لایه دیالکتریک پوشانده شده است. با حل معادلات پیوستگی ، انتقال تکانه و معادله پواسون و نیز با استفاده از شرایط مرزی مناسب، پتانسیل و میدان الکتریکی در نواحی مختلف محاسبه می شود. سطح مقطع پراکندگی و راداری محاسبه می شوند. و نمودارهای مربوط به بسامد تشدید ،میدان الکتریکی، سطح مقطع پراکندگی و راداری ترسیم می شوند. | ||
کلیدواژهها | ||
پراکندگی؛ بسامد تشدید؛ سطح مقطع بیضوی؛ سطح مقطع پراکندگی | ||
عنوان مقاله [English] | ||
Calculation of radar cross section of the magnetized plasma antenna with elliptical cross-section | ||
نویسندگان [English] | ||
Somayeh Pirizad Hejrandoost1؛ Abbas Abdoli Arani2؛ Zeinab Rahmani Nooshabadi3 | ||
1PhD student, Kashan University, Kashan, Iran | ||
2Associate Professor, Kashan University, Kashan, Iran | ||
3Assistant Professor, Kashan University, Kashan, Iran | ||
چکیده [English] | ||
In this research, the scattering of long-wavelength electromagnetic waves from an elliptical cross-section in two different structures and configurations are investigated. The plasma column is exposed to the magnetic field B0.. In the first structure, the plasma column is covered by a dielectric layer, and in the second structure, a dielectric core is coaxial with the plasma column and placed in its center, and the plasma column is covered by a dielectric layer. By solving the equations of continuity, momentum transfer and Poisson's equation, as well as by using the boundary conditions regarding the electric field and potential, we calculate the electric field in different regions. The scattering and radar cross section are calculated. The figures related to the resonance frequency , the electric field , the scattering and radar cross section are plotted | ||
کلیدواژهها [English] | ||
Scattering, resonant frequency, elliptic cross section, scattering cross section | ||
مراجع | ||
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