人家都打了幾億劑疫苗了 你分到一劑沒有?
中國的太空科技本來就遠遠落後美國
現在慢慢追上來了 能做到現在這樣真的很了不起
連歐美都不敢小覬 只有那些井蛙......
中國的太空科技突破再怎樣也是全球華人的驕傲
就算你英文再溜 人家也是把你當異族 用完就丟
bentleyyy wrote:
一天到晚拿美國來嘴 (恕刪)
那是甚麼驕傲阿
就是去人家家裡學人家五十年前做的事情怎麼做罷了
The main orbiter communications system was a two-way, S-band, high-rate radio link providing Earth command, radio tracking and science and engineering data return. This link used either a steerable 1.5-meter(59-inch) dish high-gain antenna or an omni-directional low-gain antenna, both of them on the orbiter.The low-gain antenna was used to send and receive near Earth, and the high-gain antenna was used as the orbiter journeyed farther from Earth.
S-band transmission rates varied from 8.3 or 33.3bits per second for engineering data to 2,000 to16,000 bits per second for lander and orbiter science data.
Relay from the lander was achieved through an antenna mounted on the outer edge of a solar panel. It was activated before separation and received from the lander through separation, entry, landing and surface operations. The bit rate during entry and landing was 4,000 bits per second; landed rate was 16,000 bits per second.
Data were stored aboard the orbiter on two eight-track digital tape recorders. Seven tracks were used for picture data and the eighth track for infrared data or relayed lander data. Each recorder could store 640million bits.Data collected by the orbiter, including lander data, were converted into digital form by the flight data subsystem and routed to the communications subsystem for transmission or to the tape recorders for storage. This subsystem also provided timing signals for the three orbiter science experiments.
https://mars.nasa.gov/internal_resources/828/
看看人家維京1在降落之資料怎麼傳吧，
用來傳送資料的最高速度是16,000 bps，這是降落後的資料傳輸
是你的資料太舊還是你的祝融跟天問的資料傳遞速度比不上人家
上個世紀80年代的技術?
16bps????
你一定是以為大家都不知道美國人在上個世紀80年代用的傳輸有多少吧!!!!
你再來科普阿
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