کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10370232 875945 2019 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radar maneuvering target detection based on two steps scaling and fractional Fourier transform
ترجمه فارسی عنوان
تشخیص هدف مانور رادار با استفاده از دو مقیاس پوسته پوسته شدن و تبدیل فوریه کسر
کلمات کلیدی
تشخیص هدف مانور یکپارچگی منسجم، مهاجرت محدوده چهارگانه مهاجرت فرکانس داپلر، تغییر نرخ فرکانس داپلر،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی
This paper considers the detection problem of radar maneuvering target with the range migration (RM) and Doppler frequency migration (DFM) and proposes an coherent integration method based on two steps scaling and fractional Fourier transform, i.e., TSS-FrFT. To be specific, this method corrects the quadratic RM (QRM) and DFM based on FrFT and a scaling processing of the rotation angle firstly. Then, it eliminates the coupling between the range frequency variable and FrFT domain (FrFD) variable via a second scaling processing. In the end, the coherent integration is achieved by the inverse Fourier transform (IFT) with respect to the range frequency variable. Compared with the existing methods, the proposed TSS-FrFT method has superior detection performance and low computational complexity. Moreover, considering the sudden change of the target acceleration within the coherent integration interval, this paper also presents an acceleration matched filter (AMF) to remove the Doppler frequency rate change (DFRC) caused by this acceleration change. Computer simulation results are also given to demonstrate the effectiveness of the proposed method from different aspects, i.e., computational complexity, coherent integration for a single target and multiple targets and detection performance for a uniform acceleration and non-uniform accelerations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 155, February 2019, Pages 1-13
نویسندگان
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