Echo Reduction with Minimum Sampling in Spherical Near Field Measurements using Translated-SWE Algorithm
Echo Reduction with Minimum Sampling in Spherical Near Field Measurements using Translated-SWE Algorithm
复制标题
使用 Translated-SWE 算法在球形近场测量中通过最小采样减少回声
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
F. Mioc
中科院分区：
文献类型：
--
作者：
F. Saccardi;L. Foged;F. Mioc
在近场（NF）测量中，可以应用不同的回波抑制技术来减轻来自周围环境的回波或杂散信号[1-6]。一种非常有前途的回声减少技术是基于所谓的空间或模态滤波[1]。空间滤波在具有固定AUT的测量场景中非常有效，但在天线旋转的场景中需要AUT的偏移[5-6]。不幸的是，在偏移配置中测量AUT需要采集更多的样本[7-8]。最近提出了一种基于平移球面波展开（TSWE）的偏移测量创新球面NF/FF变换算法[9]。在本文中，我们通过实验研究的回声减少使用TSWE的偏移AUT测量的属性。
In Near Field (NF) measurements different echo reduction techniques can be applied to mitigate echoes or stray signals deriving from the surrounding environment [1-6]. A very promising echo reduction technique is based on the so called spatial or modal filtering [1]. The spatial filtering is very efficient in measurement scenarios with stationary AUT but necessitates an offset of the AUT in scenarios where the antenna is rotating [5-6]. Unfortunately, the measurement of the AUT in an offset configuration requires the acquisition of a higher number of samples [7-8]. An innovative spherical NF/FF transformation algorithm for offset measurements based on a Translated Spherical Wave Expansion (TSWE) has been recently proposed [9]. In this paper we investigate by experiment the echo reduction properties of offset AUT measurements using TSWE.