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首页> 外文会议>55th International Astronautical Congress 2004 vol.8 >A Martian Telecommunications Network: UHF Relay Support of the Mars Exploration Rovers by the Mars Global Surveyor, Mars Odyssey, and Mars Express Orbiters
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A Martian Telecommunications Network: UHF Relay Support of the Mars Exploration Rovers by the Mars Global Surveyor, Mars Odyssey, and Mars Express Orbiters

机译：火星电信网络：火星全球测量师，火星奥德赛和火星快车轨道器对火星探测漫游者的超高频中继支持

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摘要

NASA and ESA have established an international network of Mars orbiters, outfitted with relay communications payloads, to support robotic exploration of the red planet. Starting in January, 2004, this network has provided the Mars Exploration Rovers with telecommunications relay services, significantly increasing rover engineering and science data return while enhancing mission robustness and operability. Augmenting the data return capabilities of their X-band direct-to-Earth links, the rovers are equipped with UHF transceivers allowing data to be relayed at high rate to the Mars Global Surveyor (MGS), Mars Odyssey, and Mars Express orbiters. As of 21 July, 2004, over 50 Gbits of MER data have been obtained, with nearly 95% of that data returned via the MGS and Odyssey UHF relay paths, allowing a large increase in science return from the Martian surface relative to the X-band direct-to-Earth link. The MGS spacecraft also supported high-rate UHF communications of MER engineering telemetry during the critical period of entry, descent, and landing (EDL), augmenting the very low-rate EDL data collected on the X-band direct-to-Earth link. Through adoption of the new CCSDS Proximity-1 Link Protocol, NASA and ESA have achieved interoperability among Mars assets, as validated by a successful relay demonstration between Spirit and Mars Express, enabling future interagency cross-support and establishing a truly international relay network at Mars.
机译：美国国家航空航天局（NASA）和欧洲航天局（ESA）建立了火星轨道器国际网络，配备了中继通信有效载荷，以支持对红色星球的机器人探索。从2004年1月开始，该网络为火星探测漫游者提供了电信中继服务，大大提高了漫游者的工程设计和科学数据的返回率，同时增强了任务的可靠性和可操作性。流浪者增强了X波段直接对地链路的数据返回能力，配备了UHF收发器，可将数据以高速率中继到火星全球测量师（MGS），火星奥德赛和火星快车轨道器。截至2004年7月21日，已经获得了超过50 Gbit的MER数据，其中近95％的数据是通过MGS和Odyssey UHF中继路径返回的，这使得相对于X-频段直接对地链路。在进入，下降和着陆（EDL）的关键时期，MGS航天器还支持MER工程遥测的高速率UHF通信，从而增强了在X波段直接对地链路上收集的极低速率EDL数据。通过采用新的CCSDS Proximity-1链路协议，NASA和ESA已实现了火星资产之间的互操作性，这一点已通过Spirit和Mars Express之间的成功中继演示进行了验证，从而可以实现未来的跨部门交叉支持并在火星上建立真正的国际中继网络。

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