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Extravehicular Activity Operations Concepts Under Communication Latency and Bandwidth Constraints

机译:通信延迟和带宽约束下的车外活动操作概念

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摘要

The Biologic Analog Science Associated with Lava Terrains (BASALT) project is a multi-year program dedicated to iteratively develop, implement, and evaluate concepts of operations (ConOps) and supporting capabilities intended to enable and enhance human scientific exploration of Mars. This pa-per describes the planning, execution, and initial results from the first field deployment, referred to as BASALT-1, which consisted of a series of 10 simulated extravehicular activities (EVAs) on volcanic flows in Idaho's Craters of the Moon (COTM) National Monument. The ConOps and capabilities deployed and tested during BASALT-1 were based on previous NASA trade studies and analog testing. Our primary research question was whether those ConOps and capabilities work acceptably when performing real (non-simulated) biological and geological scientific exploration under 4 different Mars-to-Earth communication conditions: 5 and 15 min one-way light time (OWLT) communication latencies and low (0.512 Mb/s uplink, 1.54 Mb/s downlink) and high (5.0 Mb/s uplink, 10.0 Mb/s downlink) bandwidth conditions representing the lower and higher limits of technical communication capabilities currently proposed for future human exploration missions. The synthesized results of BASALT-1 with respect to the ConOps and capabilities assessment were derived from a variety of sources, including EVA task timing data, network analytic data, and subjective ratings and comments regarding the scientific and operational acceptability of the ConOp and the extent to which specific capabilities were enabling and enhancing, and are presented here. BASALT-1 established preliminary findings that baseline ConOp, software systems, and communication protocols were scientifically and operationally acceptable with minor improvements desired by the "Mars" extravehicular (EV) and intravehicular (IV) crewmembers, but unacceptable with improvements required by the "Earth" Mission Support Center. These data will provide a basis for guiding and prioritizing capability development for future BASALT deployments and, ultimately, future human exploration missions.
机译:与熔岩地形相关的生物模拟科学(BASALT)项目是一个多年计划,致力于迭代开发,实施和评估作战概念(ConOps),以及旨在实现和增强人类对火星的科学探索的支持能力。该文件描述了第一次野外部署(称为BASALT-1)的计划,执行和初步结果,该部署由一系列有关爱达荷州月球陨石坑(COTM)中火山流的10次模拟舱外活动(EVA)组成)国家纪念碑。在BASALT-1期间部署和测试的ConOps和功能基于以前的NASA贸易研究和模拟测试。我们的主要研究问题是,在4种不同的火对地通信条件下进行5到15分钟的单向通信时间(OWLT)通信等待时间时,那些ConOps和功能在进行真实(非模拟)生物和地质科学探索时是否能正常工作?低带宽(上行链路为0.512 Mb / s,下行链路为1.54 Mb / s)和高带宽(上行链路为5.0 Mb / s,下行链路为10.0 Mb / s)表示当前为未来人类探索任务提议的技术通信能力的下限和上限。 BASALT-1关于ConOps和能力评估的综合结果来自各种来源,包括EVA任务计时数据,网络分析数据,以及关于ConOp的科学和操作可接受性以及程度的主观评分和评论此处介绍了启用和增强了哪些特定功能。 BASALT-1建立了初步的发现,即基线ConOp,软件系统和通信协议在科学和操作上都是可接受的,“火星”(EV)乘员和车内(IV)乘员需要进行较小的改进,但“地球”要求的改进是不可接受的任务支持中心。这些数据将为指导和优先为未来的BASALT部署以及最终的人类探索任务的能力开发提供基础。

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