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首页> 外文会议>International Conference on Transparent Optical Networks >Challenges Due to Rayleigh Backscattering in Radio over Fibre Links for the Square Kilometre Array Radio-Telescope
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Challenges Due to Rayleigh Backscattering in Radio over Fibre Links for the Square Kilometre Array Radio-Telescope

机译：平方公里阵列射电望远镜在光纤链路中的无线电中的瑞利反向散射带来的挑战

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摘要

In the realization of the Low Frequency Aperture Array (LFAA) within the Square Kilometre Array (SKA) project, the radiofrequency (RF) signals coming from sky and celestial sources, and received by each of the 130k+ antennas, are transmitted to the signal processing unit through analogue Radio over Fibre links. Within this low frequency band, the relatively low levels of the power of such RF signals may give rise to unexpected distortion effects. The present works highlights the physical origin of such undesired spurious frequencies generation, which can be also found in other applicative telecommunications scenarios. The details of a possible solution able to keep the above mentioned distortion terms at acceptably low levels are finally illustrated.
机译：在平方公里阵列（SKA）项目中实现低频孔径阵列（LFAA）时，来自天空和天体的射频信号（RF）分别由130k +根天线中的每一个接收，并传输到信号处理中通过光纤模拟无线电链路连接设备。在此低频段内，此类RF信号的功率电平相对较低，可能会引起意想不到的失真效应。本工作着重说明了这种不希望的杂散频率生成的物理起源，这也可以在其他应用电信场景中找到。最后说明了能够将上述失真项保持在可接受的低水平的可能解决方案的细节。

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