Contact Plan Design for Navigation Satellite Network Based on Maximum Matching
Zhenwei Hou, Xianqing Yi, Yue Zhao, Chong Li, Yi Xie · 2018
It is the most important development trends for Global Navigation Satellite System (GNSS) to take advantage of intersatellite links (ISLs) to enhance the performance. ISL is established in GNSS not only for inter-satellite communication but also for inter-satellite pseudo-range measurement. However, only one link can be established in the every moment for a satellite. Therefore, contact plan, which comprises all forthcoming network communication opportunities among satellites, needs to be carefully designed to accommodate the constraints of both inter-satellite pseudo-range measurement and communication. In this paper, we focus on the contact plan design problems considering the data transmission between satellites and ground stations. We present a method of contact plan based on maximum matching to improve the performance of inter-satellite ranging and communication. Through the trade-off between two specific solutions, different performance is achieved. The simulations evaluate the performance of the solutions in the final.