INDOZONE.ID – If astronauts reach the moon as planned by NASA’s Artemis project, one of their main goals will be to mine ice in a crater near the moon’s South Pole. However, they must navigate to the site accurately.
They already had equipment such as landers, lunar vehicles, drilling equipment and supply vehicles. However, in lunar orbit or on the very odd surface of the moon, they need to know their position in real-time and accurately.
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Of course, they need GPS for this. However, will GPS be able to work on the moon with accuracy?
Quoted from GizchinaZhang Jiaming and Li Charles of NASA’s Jet Propulsion Laboratory did some mathematical calculations about this possibility.
Mathematically and theoretically, OF, GPS will work accurately on the moon. Signals from near-Earth global navigation satellites can be used to navigate astronauts on the moon 385,000 kilometers away.
NASA is afraid of China controlling the moon to the point of banning the US from landing there. (Photo: NASA)
They charted the orbits of the navigation satellites of the US Global Positioning System and Galileo in Europe and GLONASS in Russia, for a total of 81 satellites. Most of them have directional antennas pointing toward the Earth’s surface, but their signals also radiate out into space.
Researchers say the signal is strong enough to be read by spacecraft with compact enough receivers near the moon.
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They calculated that a spacecraft in lunar orbit would be able to “see” signals from 5 to 13 satellites at any given time.
At this distance, positional accuracy is about 200 to 300 meters. In computer simulations, they can continuously apply various methods to improve accuracy. NASA scientists believe that satellites relay in lunar orbit as positioning beacons.
2023-08-23 03:24:00
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