Stepped Frequency Pulse Frequency Diverse Array Radar for Target Localization in Angle and Range Domains

Stepped Frequency Pulse Frequency Diverse Array Radar for Target Localization in Angle and Range Domains
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用于角度和距离域目标定位的步进频率脉冲频率分集阵列雷达

DOI:
10.1155/2018/8962048
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发表时间:
2018-09
影响因子:
1.5
通讯作者:
Lei Bao
Lei Bao
中科院分区:
计算机科学4区
文献类型:
--
作者:
Ming Tan;Chun yang Wang;Zhi hui Li;Xin Li;Lei Bao

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与相控阵雷达波束形成的角度相关和距离无关不同,频率分集雷达(FDA)具有角度-距离相关的波束形成能力,具有广阔的前景。然而,FDA波束图在角度和距离响应上是耦合的,这导致FDA难以同时区分两个域中的目标。本文提出了一种频率步进脉冲FDA(SFP-FDA)雷达,以消除FDA中的角距耦合,提高目标的角距定位精度。与双脉冲FDA相比,该系统在距离分辨率和多目标识别方面具有更好的性能。推导了系统的Cramér-Rao下界,并将其用于分析系统和双脉冲FDA雷达的性能。数值结果验证了该方法的有效性。
Unlike phased array bringing angle-dependent and range-independent beamforming, a new kind of radar system called frequency diverse array (FDA) has been widely used for its ability to generate angle-range-dependent beampattern, which provides a broad prospect of radar application. Nevertheless, FDA beampattern is coupling in the angle and range responses, which results in the difficulty for FDA to differentiate the target in two domains simultaneously. In this paper, a stepped frequency pulse FDA (SFP-FDA) radar is proposed to wipe off the angle-range coupling in FDA and improve the target’s angle and range localization accuracy. Compared to the double-pulse FDA, the proposed system can achieve a better performance in range resolution and multitarget identification. The Cramér-Rao lower bound (CRLB) is derived and used to analyze the performance of the proposed system and double-pulse FDA radar. Numerical results are implemented to verify the validity of the proposed scheme.
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