Mutual-coupling based phased-array calibration: A robust and versatile approach
Mutual-coupling based phased-array calibration: A robust and versatile approach
复制标题
基于互耦的相控阵校准：一种稳健且通用的方法
DOI：
--
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
F. V. van Vliet
中科院分区：
文献类型：
--
作者：
D. Bekers;R. van Dijk;F. V. van Vliet
大型相控阵的发射和接收模块通常通过内部校准网络和消声室中完整阵列的离线表征来校准幅度和相位变化。鉴于目前的一体化和模块化趋势，这种解决办法不太明显。超越网络和离线表征的替代方案是基于互耦合的校准。然而，用于从（有源）耦合测量中解析模块传递特性的现有逐步过程可能受到源自例如测量噪声、制造差异和有缺陷模块的传播误差的影响。在本文中，我们提出了一种替代方法，这是更通用和强大的比一个逐步的过程，我们测试这种方法为两个不同的阵列架构与模拟耦合数据。
The transmit and receive modules of a large phased array are often calibrated for amplitude and phase variations by an internal calibration network and an offline characterization of the complete array in an anechoic chamber. Such a solution is less obvious in view of current trends towards integration and modularity. An alternative to surpass network and offline characterization is mutual-coupling based calibration. However, existing stepwise procedures for resolving the module transfer characteristics from (active) coupling measurements can be subject to propagating errors originating from e.g. measurement noise, manufacturing differences, and defective modules. In this paper we propose an alternative approach, which is more versatile and robust than a stepwise procedure, and we test this approach for two different array architectures with simulated coupling data.