Uplink array system of antennas for the Deep Space Network

F. Amoozegar, L. Paal, J. Layland, R. Cesarone, V. Jamnejad, A. Silva, D. Losh, B. Conroy, T. Cornish
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引用次数: 7

Abstract

Recently, arraying of large or small and distributed reflector antennas for uplink applications has attracted attention for a capability upgrade to the Deep Space Network (DSN). This interest is driven by the desire to maximize the usefulness of existing DSN large apertures in case of spacecraft emergency and to develop the necessary knowledge of how the array of small and distributed reflector antennas can meet other future uplink throughput needs. The primary challenge for uplink arraying of distributed reflector antennas for deep space applications is the lack of feedback from deep space within a reasonably short period. Furthermore, the individual reflectors (and their transmitter subsystems) are thousands of wavelengths apart, which make the phase coherence of individual transmitted signals an extremely challenging task. Because of the return light time constraints, all closed-loop calibrations and relative phase adjustments for any coherent combination of signals from individual antennas be conducted no farther than near-Earth orbits. This paper discusses the large array background, scope, and evolution, and some of the lessons learned from preliminary studies of the uplink array.
深空网络天线上行阵列系统
近年来,用于上行应用的大型或小型分布式反射面天线阵列成为深空网络(DSN)能力升级的研究热点。这种兴趣的驱动因素是希望在航天器紧急情况下最大限度地发挥现有深空网络大孔径的效用,并开发关于小型和分布式反射器天线阵列如何满足其他未来上行链路吞吐量需求的必要知识。深空分布式反射天线上行阵列的主要挑战是在相当短的时间内缺乏来自深空的反馈。此外,单个反射器(及其发射机子系统)相隔数千个波长,这使得单个传输信号的相位相干性成为一项极具挑战性的任务。由于返回光时间的限制,所有的闭环校准和相对相位调整,任何信号的相干组合从个别天线进行不超过近地轨道。本文讨论了大型阵列的背景、范围和发展,以及从上行阵列的初步研究中得到的一些经验教训。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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