段陆洋, 戴晖, 耿军平, 陈靖峰, 梁仙灵, 金荣洪. 基于波束空间的方向回溯阵列指向修正方法[J]. 电波科学学报, 2016, 31(3): 450-456. doi: 10.13443/j.cjors.2015071701
      引用本文: 段陆洋, 戴晖, 耿军平, 陈靖峰, 梁仙灵, 金荣洪. 基于波束空间的方向回溯阵列指向修正方法[J]. 电波科学学报, 2016, 31(3): 450-456. doi: 10.13443/j.cjors.2015071701
      DUAN Luyang, DAI Hui, GENG Junping, CHEN Jingfeng, LIANG Xianling, JIN Ronghong. Correction of beam pointing error in retrodirective arrays based on beam space pre-identify[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2016, 31(3): 450-456. doi: 10.13443/j.cjors.2015071701
      Citation: DUAN Luyang, DAI Hui, GENG Junping, CHEN Jingfeng, LIANG Xianling, JIN Ronghong. Correction of beam pointing error in retrodirective arrays based on beam space pre-identify[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2016, 31(3): 450-456. doi: 10.13443/j.cjors.2015071701

      基于波束空间的方向回溯阵列指向修正方法

      Correction of beam pointing error in retrodirective arrays based on beam space pre-identify

      • 摘要: 针对方向回溯阵列中收发异频带来的波束指向误差, 提出了一种基于波束空间预识别的指向修正方法.从方向回溯阵列的一般模型出发, 推导频偏造成的波束指向误差, 并确定相位补偿量与接收信号角度的函数关系.通过阵元空间到波束空间的转换判断接收信号角度区间, 确定近似相位补偿量, 实现异频收发下方向回溯阵列指向误差的修正.仿真结果表明:修正后指向误差降低了一个量级并且抗噪声能力提升.相比现有方法, 本方法立足方向回溯阵列的基本架构, 实现简单, 补偿效果明显, 抗噪声能力强, 为方向回溯阵列在异频收发领域的应用提供了新思路.

         

        Abstract: In order to reduce the beam pointing error (BPE) of dual-frequency retrodirective arrays, a new beam pointing correction method based on the pre-identification of the beam space is presented. By analyzing the model of retrodirective arrays, the ideal phase compensation for the correction of BPE, as a function of the arriving angle, was derived. The possible range of the arriving angle could be estimated by power comparasion among the signals in the beam space, based on which the approximate phase compensation can be determined. Simulation results demonstrate that the proposed method is able to reduce the BPE by almost one order of magnitude with strong robustness over Gaussian white noise. Compared with the existing methods, the proposed one keeps the basic structure of retrodirective arrays and has the advantages of simplicity and robustness, which provides a new idea in dual-frequency system application of retrodirective arrays.

         

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