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Relay communications strategies for Mars exploration through 2020

机译:2020年火星探测的中继通信策略

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Mars exploration poses significant telecommunications challenges, including the return of large data volumes from high-resolution surface instruments, highly constrained mass, power, and energy for surface spacecraft, frequent telemetry and command sessions for supporting complex surface operations, and high-risk mission events such as entry, descent, and landing for which the capture of engineering telemetry is deemed critical. Relay telecommunication via Mars-orbiting spacecraft offers significant advantages in meeting these challenges, relative to conventional direct-to-Earth communications. NASA's Mars Global Surveyor and Mars Odyssey orbiters, along with ESA's Mars Express orbiter, represent an initial relay telecommunications infrastructure that has successfully supported the Spirit and Opportunity rovers. With the arrival of the Mars Reconnaissance Orbiter in 2006, this expanded relay network will provide key support to the 2007 Phoenix Lander and 2009 Mars Science Laboratory missions later this decade. Second-decade mission concepts will introduce new communications challenges; the provision of relay payloads on science orbiters provides a cost-effective means to sustain and evolve the Mars relay network.
机译:火星探测带来了巨大的电信挑战,包括从高分辨率水面仪器返回大量数据,水面航天器的质量,功率和能量受到高度限制,频繁的遥测和指挥会议以支持复杂的水面操作以及高风险的任务事件例如进入,下降和着陆,对工程遥测的捕获至关重要。与传统的直接对地通信相比,通过火星轨道飞行器进行的中继电信在应对这些挑战方面具有显着优势。 NASA的Mars全球测量师和Mars Odyssey轨道器,以及ESA的Mars Express轨道器,代表了最初的中继电信基础设施,已成功地支持了Spirit and Opportunity漫游者。随着2006年火星侦察轨道器的到来,这个扩展的中继网络将为十年后的2007年凤凰号着陆器和2009年火星科学实验室的飞行任务提供关键支持。第二个十年的任务概念将带来新的通信挑战;在科学轨道器上提供中继有效载荷提供了一种经济有效的方式来维持和发展火星中继网络。

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