The main focus of this project is to develop innovative IP routing algorithms onboard over satellites that can link user preferences and network conditions and improve end-to-end network performance, including heterogeneity of satellite nodes, interferences of satellite links, and others. The defense satellite communication system (DSCS) is a satellite system designed to provide high-volume and secure communication infrastructure for supporting real-time military voice and data communication. Nevertheless, the lack of network resource is a major issue for the satellite networks in order to support a large number of war-fighting users. In this project, IFT and its academic partner, the Towson University with Professor Wei Yu as the lead, propose an Effective Routing Algorithms for IP based Satellite Networks. The key components include: (i) Routing Algorithms for Satellite Core Ad-Hoc Network; (ii) Routing Algorithms for Satellite Access Networks; (iii) Guaranteeing Delay and Bandwidth; and (iv) Prototype implementation and validation.