Sensitivity of Mars network surface navigation to timing errors
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Mars network navigation timing errors↗
Engineering topics
Ely, T. A.
Publications and source records attributed to Ely, T. A..
Sensitivity of Mars surface navigation to timing errors
This study will show that the surface asset positioning process is robust and relatively insensitive to these errors. Indeed, the combination of in-situ and MN orbiter to Earth Doppler data is capable of simultaneously resolving surface asset and MN orbiter positions to an accuracy of 10 m, and clock errors to levels better than 3 msec.
Mars Network navigation timing errors↗
Navigation services of the Mars Network
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Mars Network navigation doppler↗
Navigation services of the Mars Network
The Mars Network provides proximity based communications and navigation services to support Mars exploration. The network will be comprised of science orbiters with a MN relay transceiver, and potentially, dedicated telecommunication orbiters. The common MN transceiver, called Electra, is currently in deployment, and is being designed for both communications and radiometric tracking.
Mars Network navigation doppler↗
Robust entry navigation using hierarchical filter architectures regulated with gating networks
The application of a hierarchical mixture of experts architecture to Martian entry navigation during the highly dynamic hypersonic pre-parachute deploy phase is investigated.
(IMU) navigation dead reckoning↗
Mars approach navigation using Mars network based doppler tracking
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Mars network approach navigation↗
NASA's telecommunications strategy for Mars exploration
We describe here strategies to meet the new telecommunications challenges.
Mars telecommunications↗
Optimal orbits for sparse constellations of Mars navigation satellites
This study examines orbit selection for small constellations at Mars that minimize time to achieve surface position accuracies at specified levels.
constellation↗
Optimal orbits for space constellations of Mars navigation satellites
Recent scientific discoveries at Mars have heralded an unprecedented commitment and focus by NASA and its international partners toward further exploration of Mars. As part of this effort NASA has an on-going project, called the Mars Network, to examine communication and navigation infrastructure requirements needed to support Mars exploration.
satellite constellations navigation optimal design↗
Mars Network: Strategies for Deploying Enabling Telecommunications Capabilities in Support of Mars Exploration
The coming decade of Mars exploration will involve a diverse set of robotic science missions, including in situ and sample return investigations, and ultimately moving towards sustained robotic presence on the Martian surface. In supporting this mission set, NASA must establish a robust telecommunications architecture that meets the specific science needs of near-term missions while enabling new methods of future exploration. This paper will assess the anticipated telecommunications needs of future Mars exploration, examine specific options for deploying capabilities, and quantify the performance of these options in terms of key figures of merit.
Edwards, C. D.↗