rootbrowseIAC-05B3session PP. Poster Session on Space CommunicationsPapers1. Design of a Three Marstationary Satellites Constellation to support a Mars-Earth Interplanetary Internet and future missions on the Red Planet.2. Discussion on Positioning Precision Improvement Plans of Twins-Satellites Navigation System in Low Latitude Area 3. End-to-end QoS Architecture in Space Internet4. Atmospheric parameters revisited in the scope of lack of accuracy in space positioning systems.