A new study examines the factors that would enable researchers to create a Martian version of the Global Positioning System widely used on Earth. Mendillo et al. investigated the planets ionospheric characteristics with radio signal data taken from the Mars Global Surveyor spacecraft and analyzed how local time, latitude, and solar cycle patterns would affect Mars electron content and contribute to errors in estimating exact locations on the planets surface.
They note that, as seen on Earth, a planets ionosphere imparts a delay on radio transmissions between an orbiting satellite and ground receiving stations that can hinder precise location of ground sites. The magnitude of the delay effect on Mars would depend on the radio frequency selected for its satellite navigation system, or it could be overcome by using a dual-frequency system.
The authors suggest that a constellation of GPS-like satellites could be introduced to improve navigation and provide continual monitoring of Martian features and locations with an expected margin of error of around one meter [three feet].
Title: Ionospheric effects upon a satellite navigations system at Mars
Michael Mendillo | Radio Science
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Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
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The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
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