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Linear independence of steering vectors of an electromagnetic vector sensor

机译:电磁矢量传感器的转向矢量的线性独立性

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摘要

We investigate linear independence of steering vectors of one electromagnetic vector sensor. We show that every three steering vectors with distinct directions of arrival (DOAs) are linearly independent. We also show that four steering vectors with distinct DOAs are linearly independent if the ellipticity angles of the signals associated with any two of the four steering vectors are distinct. Moreover, every four steering vectors corresponding to circularly polarized signals with the same spin direction are linearly dependent. We then establish that five steering vectors are linearly independent if exactly two or three of them correspond to circularly polarized signals with the same spin direction. Finally, we demonstrate that given any five steering vectors, then for any DOA there exists a steering vector that is linearly dependent on the five steering vectors.
机译:我们研究了一个电磁矢量传感器的转向矢量的线性独立性。我们显示,具有不同到达方向(DOA)的每三个转向矢量是线性独立的。我们还表明,如果与四个转向矢量中的任何两个相关联的信号的椭圆角不同,则具有不同DOA的四个转向矢量在线性上是独立的。此外,对应于具有相同自旋方向的圆偏振信号的每四个转向矢量是线性相关的。然后,我们确定,如果五个转向矢量恰好两个或三个对应于具有相同自旋方向的圆极化信号,则它们是线性独立的。最后,我们证明给定任何五个转向矢量,那么对于任何DOA,都存在一个线性依赖于五个转向矢量的转向矢量。

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