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arXiv 2001.09987astro-ph.IM
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低质量星际探测器通信的技术挑战

Technological Challenges in Low-mass Interstellar Probe Communication

David Messerschmitt, Philip Lubin, Ian Morrison

摘要:

建立在一个初步的论文设计的下行链路从一群低质量的星际探测器返回的科学数据附近的比邻星,最关键的技术问题进行了总结,并解释其意义的背景下,整个系统的设计。主要目标是确定主要的挑战或showstoppers,如果这样的下行链路是使用目前可用的现成技术来构建,从而提供方向和动机,未来的研究构成设计的挑战和技术。虽然没有任何基本的物理限制来阻止这种通信系统,但目前可用的技术在几个领域中明显不足,并且存在其他主要的设计挑战和不确定的解决方案。最大的挑战是在质量限制,多路复用同时通信从多个探测器到同一个目标系外行星,姿态控制和指向精度,以及多普勒频移由于探测器速度的不确定性。最大的技术挑战是电力,高功率和波长灵活的光源,非常有选择性和波长灵活的银行的光学带通滤波器,和单光子探测器与极低的暗计数率。对于其中的一个关键子集,我们描述了我们遇到的困难的性质及其在整个系统背景下的起源。一个接收器,限制接收到一个单一的探头也被认为是和比较的群体的情况下。

英文摘要:

Building on a preliminary paper design of a downlink from a swarm of low-mass interstellar probes for returning scientific data from the vicinity of Proxima Centauri, the most critical technology issues are summarized, and their significance is explained in the context of the overall system design. The primary goal is to identify major challenges or showstoppers if such a downlink were to be constructed using currently available off-the-shelf technology, and thereby provide direction and motivation to future research on the constituent design challenges and technologies. While there are not any fundamental physical limits that prevent such communication systems, currently available technologies fall significantly short in several areas and there are other major design challenges with uncertain solutions. The greatest identified challenges are in mass constraints, multiplexing simultaneous communication from multiple probes to the same target exoplanet, attitude control and pointing accuracy, and Doppler shifts due to uncertainty in probe velocity. The greatest technology challenges are electrical power, high power and wavelength-agile optical sources, very selective and wavelength-agile banks of optical bandpass filters, and single-photon detectors with extremely low dark-count rates. For a critical subset of these, we describe the nature of the difficulties we encounter and their origins in the overall system context. A receiver that limits reception to a single probe is also considered and compared to the swarm case.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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