Research and Implementation of the Transmission Efficiency of LEO Remote Sensing Satellite Based on Variable Coding Modulation

Orbit characteristics of LEO remote sensing satellite determine that its downlink capability is limited by transit visual time, the limited number of transit times a day greatly limits the efficiency of satellite transmission. Because the satellite-ground transmission distance will change with the e...

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Veröffentlicht in:Journal of physics. Conference series Jg. 2289; H. 1; S. 12005 - 12010
Hauptverfasser: Jie, He, Lei, Shi, Wei, Qiao, Jingyang, Zhang, Xiaodong, Wu, Zhenli, Yin, Zhen, Qin
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Bristol IOP Publishing 01.06.2022
Schlagworte:
Coding
Data transmission
Design optimization
Efficiency
Elevation angle
Ground stations
Low earth orbits
Modulation
Physics
Remote sensing
Satellite transmission
Servocontrol
Systems design
Transit time
Transmission efficiency
ISSN:1742-6588, 1742-6596
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Abstract Orbit characteristics of LEO remote sensing satellite determine that its downlink capability is limited by transit visual time, the limited number of transit times a day greatly limits the efficiency of satellite transmission. Because the satellite-ground transmission distance will change with the elevation angle of the ground station and the change of the satellite azimuth and elevation angle when the satellite transits, the traditional satellite can't make full use of the link margin in order to ensure the transmission of the longest distance, too much link allowance at high elevation when using fixed modulation mode. Therefore, based on variable coding modulation, the real-time transmission distance is obtained by using servo controller and intelligent calculation method on satellite, through simulation analysis and threshold analysis setting, this paper proposes a more optimized data transmission system design, which can save a lot of satellite-ground link margin and improve the satellite-ground transmission efficiency by about 30%.
AbstractList Orbit characteristics of LEO remote sensing satellite determine that its downlink capability is limited by transit visual time, the limited number of transit times a day greatly limits the efficiency of satellite transmission. Because the satellite-ground transmission distance will change with the elevation angle of the ground station and the change of the satellite azimuth and elevation angle when the satellite transits, the traditional satellite can't make full use of the link margin in order to ensure the transmission of the longest distance, too much link allowance at high elevation when using fixed modulation mode. Therefore, based on variable coding modulation, the real-time transmission distance is obtained by using servo controller and intelligent calculation method on satellite, through simulation analysis and threshold analysis setting, this paper proposes a more optimized data transmission system design, which can save a lot of satellite-ground link margin and improve the satellite-ground transmission efficiency by about 30%.
Author Wei, Qiao
Zhenli, Yin
Zhen, Qin
Jingyang, Zhang
Lei, Shi
Xiaodong, Wu
Jie, He
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SubjectTerms Coding
Data transmission
Design optimization
Efficiency
Elevation angle
Ground stations
Low earth orbits
Modulation
Physics
Remote sensing
Satellite transmission
Servocontrol
Systems design
Transit time
Transmission efficiency
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Title Research and Implementation of the Transmission Efficiency of LEO Remote Sensing Satellite Based on Variable Coding Modulation
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