Paper Info
Title
Multi-Carrier Relaying for Successive Data Transfer in Earth Observation Satellite Constellations.
Abstract
Near real time monitoring system utilizing earth observation satellite constellation is expected for disaster management. However, these satellites may not have sufficient time to transmit all of their observed data to a ground station because low earth orbit (LEO) satellites pass over a ground station for a few minutes. Therefore, if the satellite stores more data than the size of transmission data to a ground station, it needs to transmit residual data after approaching other ground stations. As a result, it causes lack of timeliness due to the overhead time for fine tracking between a satellite and a new target of ground station. To deal with above mention, this paper proposes novel routing method to improve transfer ratio of whole observed data in a contact time. Relative to the conventional method which transmits data to a ground station, the proposed method divides observed data and modulates them as multi-carrier signals so as to distribute to two or more ground stations by multi-hop relaying. Furthermore, the satellite of this system switches inter-satellite link and satellite-to-ground link for own data and other satelliteu0027u0027u0027u0027s data utilizing channelizer dynamically. The effectiveness of our proposal is verified through simulation results.
Year
Venue
Field
2017
GLOBECOM
Multi carrier,Residual,Satellite,Monitoring system,Data transmission,Computer science,Real-time computing,Constellation,Earth's orbit,Earth observation satellite
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Shigenori Tani1371.91
Michiya Hayama200.34
Hiroki Nishiyama3128592.61
Nei Kato43982263.66
Katsuyuki Motoyoshi571.93
Atsushi Okamura6558.06