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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Approximate Compensation for Mutual Coupling in a Direct Data Domain Least Squares Approach using the In-situ Measured Element Patterns
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Approximate Compensation for Mutual Coupling in a Direct Data Domain Least Squares Approach using the In-situ Measured Element Patterns

机译：使用原位测量元素模式的直接数据域最小二乘法中的相互耦合的近似补偿

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摘要

This paper presents a new technique for an approximate compensation of the effects of mutual coupling among the elements of an array using the measured in-situ element patterns in a direct data domain least squares algorithm. In this paper, we consider the antenna elements in the phased array to have finite dimensions, i.e., they are not omni-directional radiators. Hence, the antenna elements sample and re-radiate the incident fields resulting in mutual coupling between the antenna elements. Mutual coupling not only destroys the linear wavefront assumption for the signal of interest but also for all the interferers impinging on the array. Thus, we propose a new direct data domain approach that partly compensates for effect of mutual coupling, specifically when the jammer strengths are comparable to that of the signal. For strong interferers, a more accurate compensation for the mutual coupling is necessary using the transformation matrix through the formation of a uniform liner virtual array.
机译：本文提出了一种新技术，用于在直接数据域最小二乘算法中使用测得的原位元素图案来近似补偿阵列元素之间相互耦合的影响。在本文中，我们认为相控阵中的天线元件具有有限的尺寸，即它们不是全向辐射器。因此，天线元件采样并重新辐射入射场，从而导致天线元件之间的相互耦合。互耦合不仅破坏了感兴趣信号的线性波前假设，而且破坏了所有撞击在阵列上的干扰源。因此，我们提出了一种新的直接数据域方法，该方法部分补偿了相互耦合的影响，特别是在干扰强度与信号强度相当时。对于强干扰源，必须使用变换矩阵通过形成均匀的衬里虚拟阵列来对相互耦合进行更准确的补偿。

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