关键词: 天地一体化, 卫星链路, 高逼真, 高通量, 差分补偿

Abstract: In view of the large scale and diverse protocols of space-ground integrated network, it is necessary to build a corresponding emulation platform for rigorous evaluation and verification. In order to overcome shortcomings of the existing emulation technologies of satellite links, dynamic differential compensation and random number algorithms are used to realize high-fidelity emulation of satellite link delay and data packet loss rate respectively. High-throughput routing emulation technology is adopted to improve the throughput of space-based backbone links. An emulation scenario, which including six space-based backbone nodes and sixty-six space-based access nodes, is constructed. Based on this scenario, satellite link delays, data packet loss rates, and satellite network throughputs are tested. Comparing to the traditional methods, the proposed method has advantages of high fidelity and high throughput.

Key words: space-ground integration, satellite link, high fidelity, high throughput, differential compensation