Source: Photo.com
On December 21, NASA transmitted video with a laser from deep space, 31 million kilometers away, in 101 seconds.
According to reports, this technology will one day allow astronauts to transmit images and videos to Earth on Mars at high speeds. According to reports, this is the first time that NASA has used a laser to transmit high-definition video from deep space, testing the use of invisible near-infrared lasers to send and receive data to Earth.
According to The Paper, the first probe to use this technology was launched in mid-October this year. The main character of this video is a 3-year-old orange tabby cat named Taters who is chasing a moving laser dot to play. Unlike Taters' toys, the lasers launched into space are infrared and invisible to the naked eye. The clip of Taters playing with a laser pointer is the first in a series of experiments that the Psyche probe plans to conduct over the next two years.
Malcolm Wright, head of laser flight at NASA's Jet Propulsion Laboratory, said that as spacecraft get farther away from Earth, NASA scientists and engineers will experiment with video transmission at greater distances, reaching Mars by mid-2024. After this month's holiday, they will conduct a test every Monday, and the next test will take place in January, when the Psyche detector will be 30 million miles (48.28 million kilometers) away.
Separately, NASA says it is already preparing for the next astronaut to land on the moon to use the technology. It will allow wideband video, scientific information, and high-definition images to be transmitted back to Earth at high speed from places other than the moon.
In 2021, there was a decrease in both the number of patent applications and the number of grants
From 2011 to 2020, the number of patent applications in the global satellite Internet industry showed a gradual growth trend, and decreased in 2021. In 2021, the number of patent applications in the global satellite Internet industry was 23,240, a decrease of 5,326 from 2020.
In terms of patent authorization, the number of patents granted in the global satellite Internet industry from 2011 to 2021 also showed a trend of growth and then decline. In 2021, the number of patents granted in the global satellite Internet industry will be 6,427, with only 27.65% of the patents authorized.
Note: (1) The patent grant rate indicates the validity rate of the application and the success rate of the application that is finally granted.
(2) Statistical note: If the 2012 patent application is granted in 2014, the granted patent will be shown in the 2012 patent application.
Distribution of technology source countries: the United States has the highest proportion
At present, the world's largest source of satellite Internet technology is the United States, and the number of satellite Internet patent applications in the United States accounts for nearly 40% of the total number of satellite Internet patent applications. The second is China, where the number of satellite Internet patent applications accounts for about 20% of the total number of satellite Internet patent applications in the world; Japan ranks third in terms of the number of patent applications, accounting for about 15%.
Lin Baojun, a senior researcher at the Institute of Microsatellite Innovation of the Chinese Academy of Sciences and chief designer of the Beidou-3 satellite system, said that just as 5G communication technology on the ground has competition in China, the United States and Europe, space competition is inevitable. In order to realize "one network between heaven and earth" in Internet technology, peaceful competition is benign and can promote technological progress and innovation.
In addition, Lin Baojun pointed out that at present, satellites of various countries cannot communicate with each other, and he believes that interconnection is the general trend in the future. In the short term, in order to protect the size of their own market, countries will also have some self-interested ideas. There is still a long way to go before the interfaces and protocols of satellites can be uniformly designed.
Prospective Economist APP Information Group
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