A SATELLITE MOBILITY MODEL FOR QUALNET ... - NMSL

have identified two avenues offuture work that need attention:satellite antenna pointing and footprint size. Thesefactors depend on an individual satellite's capabilities andmissions. These problems can be solved by collecting adatabase of infonnation for each satellite and importingthis data into Qualnet at initialization time as well as takingterrain into consideration.References[1] V. Cerf. The invisible internet. In Communications ofthe ACM,volume 44, pages 34-47. ACM, January 2001.[2] P. Chitre and F. Yegenoglu. Next-generation satellite networks:Architectures and implementation. In Proceedings ofIEEE CommunicationsMagazine, pages 30-36, March 1999.[3] G. Compareto and R. Ramirez. Trends in mobile satellite technology.In Proceedings of IEEE Computer, volume 30, pages44-52, 1997.[4] L. Breslau et ale Advances in network simulation. IEEE Computer,33(5):59-67, May 2000.[5] K. Fall. A delay-tolerant network architecture for challenged internets.In ACM SIGCOMM, pages 27-34, Karlsruhe, Germany,2003. ACM.[6] u.s. Government. The astronomical almanac. U.S. GovernmentPrinting Office, 2008.[7] R. Hoots, R.Roehrich, and T. Kelso. Spacetrack report #3: Modelsfor propagation of the norad element sets. U.S. Air ForceAerospace Defense Command, December 1980.[8] Y. Hu and V. Li. Satellite-based internet: a tutorial. In ProceedingsofIEEE Communications Magazine, pages 154-162, March2001.[9] S. Jain, K. Fall, and R. Patra. Routing in a delay tolerant network.InACM SIGCOMM, pages 145-158, USA, 2004. ACM.[10] L. Sanchez M. Allman, D. Glover. Enhancing tcp over satellitechannels using standard mechanism. RFC 2488, January 1999.VI. Reviewers Comments1. This paper describes a simplified model oflow orbitsatellite motion that can be integrated into QUALNET.The results have been validated against more accurateand computationly complex models and found to beaccurate. It promises to be an effective, low cost methodofincorporating LEOIMEO satellite motion in Qualnetmodel simulations.2. Excellent treatment ofsatellite orbital mechanics thepaper describes an open source satellite mobility model(SatMob)for LowlMedium Earth Orbit (LEOIMEO)satellites to be used as part ofexisting Qualnet networksimulation tools.3. This paper developed an open source satellite mobilitymodel for the Qualnet network simulator. contribution ofthis work allows users to easily add satellite nodes totheir network experiments without the purchase ofadditional software licenses such as the STK. The paperis very well written.70f7Authorized licensed use limited to: Univ of Calif Santa Barbara. Downloaded on October 21, 2009 at 15:53 from IEEE Xplore. Restrictions apply.