"I look up, over the moon, how many children in the free online ... ..." humans on the moon in order to live, in addition to air, water and fresh food outside, WiFi will also be a great demand, because the current a growing number of "no network will buddies" on the planet. The good news is that through continuous efforts, MIT and NASA is likely to become a reality it.
It is reported that, MIT and NASA have developed a data transmission system, which we normally use the same WiFi connection, you can also carry out large-scale data and video transmission. The system in New Mexico by four separate telescopes make up the terminal, can transmit uplink signals to the moon, by a laser transmitter device information in the form of pulses of invisible infrared code sent Kuige each telescope platform, transmit power It reached 40 watts.
It is reported that, MIT and NASA will be announced this technology in laser and photoelectric CLEO meeting June 9 in California held. The two sides will live laser show upload speed of Earth and the Moon, and is expected to break the record. Earth and Moon distance 284 633 km, and the current transmission speed of up 19.44mbps, download speeds of 622mbps. MIT's Mark Stevens said that between the Earth and the Moon using a laser beam at a high data rate transmission of information is a challenging task, because it is very far away and will bend the beam divergence, and the Earth's atmosphere is difficult to traverse hurdle, these are likely to result in loss of information.
Each for receiving signals moon telescope will have a different area of the air column, this method can be bent to increase the atmospheric optical beam to a receiver by any chance. These receivers on and connected to a satellite orbiting the moon, the telescope also has satellite equipment, will be used to focus the laser beam, into an optical fiber. These pulses can become electrical pulse, thereby ultimately into data.
Although it sounds satellite receive only one-billionth of 40 watts less than the signal. But Stevens said it has more than 10 times the required amount of stable transmission of information. (Compiled: Xia via arstechnica)
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