Li Jingjing, Yu Xianxiang, Cui Guolong
Kexin College Hebei University of Engineering, Handan 056038, China.
School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
Sensors (Basel). 2017 Jun 15;17(6):1405. doi: 10.3390/s17061405.
This paper considers the near-field source location problem for a nonuniform linear array (non-ULA) in the presence of sensor gain and phase errors. A sequential optimization calibration method is proposed to simultaneously estimate the gain and phase errors as well as the locations of calibration sources involving the ranges and the azimuths by exploiting some imprecise a-priori knowledge of calibration sources. At each iteration of the proposed method, the source locations, and the gain and phase errors are obtained iteratively. Finally, at the analysis stage, we evaluate the effectiveness of the proposed technique using some numerical simulations. Results show that the proposed algorithm shares the capability to jointly estimate the source locations and the errors.
本文研究了存在传感器增益和相位误差情况下非均匀线性阵列（non-ULA）的近场源定位问题。提出了一种序贯优化校准方法，通过利用校准源的一些不精确先验知识，同时估计增益和相位误差以及校准源的位置，包括距离和方位角。在所提方法的每次迭代中，迭代获得源位置以及增益和相位误差。最后，在分析阶段，我们通过一些数值模拟评估所提技术的有效性。结果表明，所提算法具有联合估计源位置和误差的能力。
