The National Aeronautics and Space Administration announced on the 18th, "Ling Shen Xing" detector will be a section of the cat about the ultra-high definition video from about 31 million kilometers away from deep space sent to Earth, this is the first time the use of laser from deep space transmission of ultra-high definition video, for deep space communication is of great significance.
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NASA released a statement saying that the "Spiritus" probe on the 11th using a kind of advanced equipment called flight laser transceiver will be a 15-second-long ultra-high-definition video from about 31 million kilometers away from the Earth's deep space sent back to Earth. This distance is about 80 times the distance between the Earth and the Moon.
The video took 101 seconds to reach the surface, with a maximum transmission rate of 267 megabits per second. The flying laser transceiver sends the video signal to the Hale Telescope at Caltech's Palomar Observatory in San Diego County, California, by firing a near-infrared laser beam. The signal is downloaded and transmitted to the Jet Propulsion Laboratory in southern California, where the video is played on a screen in the lab.
Jet Propulsion Laboratory researcher Ryan Rogarin said the video signal was transmitted from deep space to the ground faster than it could be transmitted via the Internet from the Palomar Observatory's Hale Telescope to the Jet Propulsion Laboratory.
The Lupus probe carrying the video was launched on Oct. 13, setting off to explore the metal-rich asteroid of the same name.
Researchers have demonstrated the use of lasers to transmit signals from near-Earth orbit and the moon, and the Reister probe is the first to demonstrate this technology in deep space, AFP reported.
Why a cat?
The video shows an orange tabby cat playing after a moving laser dot. There is also information displayed in graphics and text, including the orbit of the Proteus probe, the dome of the Palomar Observatory, the technical parameters of the laser beam, and the cat's heart rate, color, and breed. The cat, named "Tudor," is the pet of a staff member at the Jet Propulsion Laboratory. Coincidentally, the planet Spiritus is shaped like a potato.
Jet Propulsion Laboratory program manager Bill Klipstein said that in order to make the transmission test more memorable, the researchers decided to make a "fun video". According to NASA's website, the cat as the protagonist of the video with a historical event in 1928, that year, the U.S. television stations in the early television signal transmission test used the cartoon image of "Felix the cat", human beings from now on into the era of television.
NASA hopes that, with the help of laser communications, data transmission from deep space can be 10 to 100 times faster than the most advanced radio communications technology currently in use, in order to meet the needs of the future of human beings on Mars after the transmission of complex information, as well as high-definition images and video.
Dec 19, 2023
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NASA Sends Ultra-high-definition Video From Deep Space Using Lasers For The First Time
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