The space station mission faces the data interaction requirements between the space station and multiple extravehicular astronauts. The traditional wireless communication mode with constant transmitting power will cause the interference and incompatibility of communication due to the different positions of the extravehicular astronauts. In order to ensure the communication link stability of all extravehicular astronauts, an automatic power control method is proposed. The extravehicular communication device located in the space station receives the real-time data of all extravehicular astronauts, and the signal to noise ratio is estimated. According to the evaluation results, the power is automatically controlled by the two ways of outer loop and inner loop. Finally, the signal to noise ratio of all the astronauts received by the extravehicular communication device is the same, ensuring the quality of extravehicular communication. The method is verified by building the testbed and carrying out experiment, and the result shows that the multiple signal to noise ratio received is almost the same, and the reliability for multiple extravehicular activity is improved.
A Study on Automatic Power Control Method Applied in Astronaut Extravehicular Activity
Lect. Notes Electrical Eng.
International Conference in Communications, Signal Processing, and Systems ; 2019 ; Urumqi, China July 20, 2019 - July 22, 2019
04.04.2020
6 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Space station , Communication system of astronaut extravehicular activity , Reversed signal , Automatic power control Engineering , Communications Engineering, Networks , Circuits and Systems , Signal, Image and Speech Processing , Information Systems and Communication Service , Information and Communication, Circuits
Space station extravehicular load care method based on astronaut operation
Europäisches Patentamt | 2023
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