基于稀疏重构的共形阵列稳健自适应波束形成算法

陈沛; 赵拥军; 刘成城

doi:10.11999/JEIT160436

基于稀疏重构的共形阵列稳健自适应波束形成算法

doi: 10.11999/JEIT160436

基金项目:

国家自然科学基金(61401469)

计量
- 文章访问数: 1287
- HTML全文浏览量: 183
- PDF下载量: 440
- 被引次数: 0
出版历程
- 收稿日期: 2016-04-29
- 修回日期: 2016-11-10
- 刊出日期: 2017-02-19

Robust Adaptive Beamforming Algorithm for Conformal Arrays Based on Sparse Reconstruction

Funds:

The National Natural Science Foundation of China (61401469)

摘要

摘要: 针对共形阵列天线自适应波束形成中存在的通用性差、主瓣保形困难、计算复杂度高等问题，该文提出一种基于稀疏重构的稳健自适应波束形成算法。该算法通过引入渐进最小方差准则，实现了干扰加噪声协方差矩阵的稀疏重构，并得到期望方向上的导向矢量估计，进而求得波束形成器的最优权矢量。该算法无需复杂的子阵分解或虚拟映射变换，适用于任意阵列形状。仿真实验验证了该算法不仅保证了期望的主瓣响应，同时对指向误差有较好的稳健性。与现有算法相比，该算法所需采样快拍数少，计算复杂度低，收敛速度快，在较大的输入信噪比范围内达到了较好的阵列输出性能。
- 稳健自适应波束形成 /
- 共形阵列 /
- 渐进最小方差准则 /
- 稀疏重构
Abstract: Adaptive beamforming techniques for conformal arrays suffer from poor universality, difficulty to maintain the main beam and high computational cost. A novel robust adaptive beamforming algorithm for conformal arrays based on sparse reconstruction is proposed to alleviate the existing problems. Firstly, by introducing the Asymptotic Minimum Variance (AMV) criterion, the Interference-Plus-Noise (IPN) covariance matrix reconstruction is realized in a sparse way. Secondly, the Steering Vector (SV) of the Signal Of Interest (SOI) is estimated. Finally, the optimal weight coefficients are achieved. Simulation results demonstrate the effectiveness and robustness of the proposed algorithm and prove that this algorithm can achieve superior output performance over the existing adaptive beamforming methods for conformal arrays in a large range of Signal to Noise Ratio (SNR) of the SOI. Moreover, the proposed algorithm needs fewer snapshots with a lower computational cost and has a faster convergence rate.
- Robust adaptive beamforming /
- Conformal arrays /
- Asymptotic minimum variance /
- Sparse reconstruction

HTML全文

参考文献(23)

JOSEFSSON L and PERSSON P. Conformal Array Antenna Theory and Design[M]. New York: John Wiley Sons, 2006: 1-2.

SEMKIN V, FERRERO F, BISOGNIN A, et al. Beam switching conformal antenna array for mm-wave communications[J]. IEEE Antennas and Wireless Propagation Letters, 2016, 15: 28-31. doi: 10.1109/LAWP. 2015.2426510.

YANG Hu, JIN Zusheng, MONTISCI G, et al. Design equations for cylindrically conformal arrays of longitudinal slots[J]. IEEE Transactions on Antennas and Propagation, 2016, 64(1): 80-88. doi: 10.1109/TAP.2015.2496965.

ORAIZI H and SOLEIMANI H. Optimum pattern synthesis of non-uniform spherical arrays using the Euler rotation[J]. IET Microwaves, Antennas and Propagation, 2015, 9(9): 898-904. doi: 10.1049/iet-map.2014.0460.

HU Wanqiu, WANG Xuesong, LI Yongzhen, et al. Synthesis of conformal arrays with matched dual-polarized patterns[J]. IEEE Antennas and Wireless Propagation Letters, 2016, 15: 1341-1344. doi: 10.1109/LAWP.2015.2508438.

DORSEY W M, COLEMAN J O, and PICKLES W R. Uniform circular array pattern synthesis using second-order cone programming[J]. IET Microwaves, Antennas and Propagation, 2015, 9(8): 723-727. doi: 10.1049/iet-map.2014. 0418.

HUANG Zhijiang, ZHOU Jie, and ZHANG Haiping. Full polarimetric sum and difference patterns synthesis for conformal array[J]. Electronics Letters, 2015, 51(8): 602-604. doi: 10.1049/el.2014.4428.

邹麟. 基于几何代数的共形阵列空域信号处理研究[D]. [博士论文], 电子科技大学, 2012: 54-60.

ZOU Lin. Research on spatial signal processing of conformal array based on geometric algebra[D]. [Ph.D. dissertation], University of Electronic Science and Technology of China, 2012: 54-60.

YANG Peng, YANG Feng, NIE Zaiping, et al. Robust adaptive beamformer using interpolation technique for conformal antenna array[J]. Progress in Electromagnetics Research B, 2010, 23: 215-228. doi: 10.2528/PIERB10061504.

YANG Peng, YANG Feng, NIE Zaiping, et al. Robust beamformer using manifold separation technique for semispherical conformal array[J]. IEEE Antennas and Wireless Propagation Letters, 2011, 10(10): 1035-1038. doi: 10.1109/LAWP.2011.2168936.

吕志丰，雷宏. 基于差值映射的压缩感知MUSIC算法[J]. 电子与信息学报, 2015, 37(8): 1874-1878. doi: 10.11999/ JEIT141542.

L Zhifeng and LEI Hong. Compressive sensing MUSIC algorithm based on difference map[J]. Journal of Electronics Information Technology, 2015, 37(8): 1874-1878. doi: 10.11999/JEIT141542.

WANG Jian, SHENG Weixing, HAN Yubing, et al. Adaptive beamforming with compressed sensing for sparse receiving array[J]. IEEE Transactions on Aerospace and Electronic Systems, 2014, 50(2): 823-833. doi: 10.1109/TAES.2014. 120532.

GU Yujie and LESHEM A. Robust adaptive beamforming based on interference covariance matrix reconstruction and steering vector estimation[J]. IEEE Transactions on Signal Processing, 2012, 60(7): 3881-3885. doi: 10.1109/TSP.2012. 2194289.

HUANG Lei, ZHANG Jing, XU Xu, et al. Robust adaptive beamforming with a novel interference-plus-noise covariance matrix reconstruction method[J]. IEEE Transactions on Signal Processing, 2015, 63(7): 1643-1650. doi: 10.1109/TSP. 2015.2396002.

STOICA P and MOSES R. Spectral Analysis of Signals [M]. New Jersey: Prentice Hall, 2005: 273-281.

ABEIDA H, ZHANG Qilin, LI Jian, et al. Iterative sparse asymptotic minimum variance based approaches for array processing[J]. IEEE Transactions on Signal Processing, 2013, 61(4): 933-944. doi: 10.1109/TSP.2012.2231676.

DELMAS J P. Asymptotically minimum variance second- order estimation for noncircular signals with application to DOA estimation[J]. IEEE Transactions on Signal Processing, 2004, 52(5): 1235-1241. doi: 10.1109/TSP.2006.873505.

STOICA P, BABU P, and LI J. SPICE: A sparse covariance-based estimation method for array processing[J].

IEEE Transactions on Signal Processing, 2011, 59(2): 629-638. doi: 10.1109/TSP.2010.2090525.

RASEKH M and SEYDNEJAD S R. Design of an adaptive wideband beamforming algorithm for conformal arrays[J]. IEEE Communications Letters, 2014, 18(11): 1955-1958. doi: 10.1109/LCOMM.2014.2357417.

ELNASHAR A, ELNOUBI S M, and EL-MIKATI H A. Further study on robust adaptive beamforming with optimum diagonal loading[J]. IEEE Transactions on Antennas and Propagation, 2006, 54(12): 3647-3658. doi: 10.1109/TAP.2006.886473.

施引文献

资源附件(0)

访问统计