TDRSS traffic model based on time and spatial characteristics
WANG Lei1,3, KUANG Linling2, HUANG Huiming3
1. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
2. Tsinghua Space Center, Tsinghua University, Beijing 100084, China;
3. Beijing Space Information Relay and Transmission Technology Center, Beijing 100094, China
Abstract：Analysis and modeling of the traffic characteristics in tracking and data relay satellite systems (TDRSS) are the key to improving the system scheduling performance. A parametric model was developed to unify the system multi-type traffic representation based on a scheduling principle and actual TDRSS operating data. The system can describe the traffic time and spatial characteristics. The antenna pointing angle is used as the mission's space related variable to improve the time sequence constraint of consecutive missions and the time and spatial accuracies that are rarely considered in conventional traffic models. The model validity is verified through analysis of NASA TDRSS traffic data and numerical simulations. The results show that the average scheduling success rate is 10.65% better than the conventional model, while the average antenna resource consumption is reduced by 12.85%, which effectively improves the TDRSS efficiency.
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WANG Lei, KUANG Linling, HUANG Huiming. TDRSS traffic model based on time and spatial characteristics. Journal of Tsinghua University(Science and Technology), 2017, 57(1): 55-60,66.
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2017, Vol. 57 
