分布式相控阵的远程无线频率同步

2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting Pub Date : 2020-07-05 DOI:10.1109/IEEECONF35879.2020.9329870

Serge R. Mghabghab, Anton Schlegel, Robert Gress, J. Nanzer

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引用次数: 6

摘要

我们演示了使用支持联合频率传输和定位的微波系统在90米距离上的独立无线系统的无线频率同步。无线频率同步是相干分布式相控阵的基本协调要求之一。当与节点间测距相结合时，频率同步使单独的节点能够为各种应用实现分布式波束成形。我们建立了一种新的频谱稀疏双音测距波形，结合了一个自混合接收器电路，该电路从双音分离中解调频率参考，并用于同步本地振荡器。户外进行的测量显示了两个无线系统之间的基本同步，为未来具有广泛分离节点的分布式波束形成提供了框架。

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Long-Range Wireless Frequency Synchronization for Distributed Phased Arrays

We demonstrate wireless frequency synchronization of separate wireless systems over a 90 m distance using a microwave system supporting joint frequency transfer and localization. Wireless frequency synchronization represents one of the basic coordination requirements in coherent distributed phased arrays. When combined with inter-node ranging, frequency synchronization enables separate nodes to implement distributed beamforming for various applications. We build on a novel spectrally-sparse two-tone ranging waveform combined with a self-mixing receiver circuit that demodulates a frequency reference from the two-tone separation and is used to synchronize the local oscillator. Measurements conducted outdoors demonstrate basic synchronization between two wireless systems, providing a framework for future distributed beamforming with widely separated nodes.

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来源期刊

2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting

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