用于低信噪比信道的大型天线阵列技术

2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277) Pub Date : 2001-10-28 DOI:10.1109/MILCOM.2001.986062

Zhong Ye, E. Satorius, V. Vilnrotter, T. Pham, D. Fort

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引用次数: 5

摘要

针对深空通信中常见的接收信号信噪比极低的信道条件，研究了各种阵列技术。这些方法包括基于相关性的盲方法以及基于子空间的超分辨率方法。除了微弱的接收信号外，大气湍流和来自附近行星(可能还有类星体)的空间相关干扰也会造成额外的信道损伤。结果表明，基于子空间的MUSIC算法具有良好的角度分离精度和干扰抑制能力，是该应用的理想选择。自适应波束形成技术与MUSIC算法相结合，为对抗信道损伤提供了一个灵活的平台。

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Large antenna array techniques for very low SNR channels

Various arraying techniques are studied focusing on the very low received signal SNR channel conditions commonly found in deep space communications applications. These include correlation-based blind approaches as well as a sub-space based superresolution approach. In addition to weak received signals, atmospheric turbulence and spatially correlated interference from nearby planets (and possibly quasars) creates additional channel impairment. It is demonstrated that the sub-space based MUSIC algorithm is a strong candidate for this application that can provide great angle separation accuracy and interference suppression capability. Adaptive beamforming techniques in combination with the MUSIC algorithm provide a flexible platform to combat channel impairment.

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2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277)

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