Robust Capon beamforming based on frequency diverse array

被引：0
|
作者：
Feng X. [1 ]
Xie J. [1 ]
Ge J. [1 ]
Zhang J. [2 ]
Wang B. [1 ]
机构：
[1] Air and Missile Defense College, Air Force Engineering University, Xi'an
[2] Shaanxi College of Communication Technology, Xi'an
来源：
Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | 2019年 / 45卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Frequency diverse array; Pointing error; Robust Capon beamforming (RCB); Signal processing; Steering vector;
D O I：
10.13700/j.bh.1001-5965.2018.0190
中图分类号：
学科分类号：
摘要：
In order to overcome the defect that the phased array beam has only angular resolution, the two-dimensional range-angle correlation of the beam is realized by adding a very small frequency increment relative to the carrier frequency between the array elements in the frequency diverse array. Three kinds of reception signal processing mechanism were introduced, and the theoretical deduction and analysis were carried out. The simulation shows the practicability of the two mechanisms. Aimed at target steering vector estimation and real target steering vector mismatch problem in the presence of the pointing error, the closed solution of the corrected steering vector is given by using robust Capon beamforming(RCB) algorithm. And in the two kinds of signal processing mechanism, the beampattern is simulated. The simulation results show that the RCB algorithm can form a high gain in the target position and form a null in the interference position. The effectiveness of the algorithm in the frequency diverse array is verified. © 2019, Editorial Board of JBUAA. All right reserved.
引用
收藏
页码：769 / 777
页数：8
相关论文
共 18 条
  • [1] Wang W.Q., Subarray-based frequency diverse array radar for target range-angle estimation, IEEE Transactions on Aerospace and Electronic Systems, 50, 4, pp. 3057-3067, (2014)
  • [2] Gao K.D., Wang W.Q., Cai J.Y., Et al., Decoupled frequency diverse array range-angle-dependent beampattern synthesis using non-linearly increasing frequency offsets, IET Microwaves, Antennas & Propagation, 10, 8, pp. 880-884, (2016)
  • [3] Antonik P., Wicks M.C., Griffiths H.D., Et al., Frequency diverse array radars, Proceedings of the IEEE Radar Conference, pp. 215-217, (2006)
  • [4] Secmen M., Demir S., Hizal A., Et al., Frequency diverse array antenna with periodic time modulated pattern in range and angle, Proceedings of the IEEE Radar Conference, pp. 427-430, (2007)
  • [5] Wang W.Q., Overview of frequency diverse array in radar and navigation applications, IET Radar, Sonar & Navigation, 10, 6, pp. 1001-1012, (2015)
  • [6] Wang W.Q., Frequency diverse array antenna: New opportunities, IEEE Antennas and Propagation Magazine, 57, 2, pp. 145-152, (2015)
  • [7] Wang Z.B., Tigrek F., Krasnov O., Et al., Interleaved OFDM radar signals for simultaneous polarimetric measurements, IEEE Transactions on Aerospace and Electronic Systems, 48, 3, pp. 2085-2099, (2012)
  • [8] Zhang T.X., Xia X.G., Kong L.J., IRCI free range reconstruction for SAR imaging with arbitrary length OFDM pulse, IEEE Transactions on Signal Process, 62, 18, pp. 4748-4759, (2014)
  • [9] Ahmed S., Alouini M.S., MIMO-radar waveform covariance matrix for high SINR and low side-lobe levels, IEEE Transactions on Signal Process, 62, 8, pp. 2056-2065, (2014)
  • [10] Cui G.L., Li H.B., Rangaswamy M., MIMO radar waveform design with constant modulus and similarity constraints, IEEE Transactions on Signal Processing, 62, 2, pp. 343-353, (2014)
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