{"title":"There is Nothing so Practical as a Good Theory","authors":"C. Landauer","doi":"10.1109/SMC-IT.2011.32","DOIUrl":"https://doi.org/10.1109/SMC-IT.2011.32","url":null,"abstract":"The title is a quote from the psychologist Kurt Lewin, who was pointing out that psychology was thin on good theories, but benefited greatly when there was one. While space systems and space system development have many good theories, we think there could be more. This paper is a step towards providing pointers to opportunities for new theories and new applications of existing theories to improve the practical development of space systems. Our intent is a reach back from application difficulties to possibly applicable theories, and a description of what those theories can imply for us. The application difficulties occur throughout the development lifecycle, in acquisition preparation, requirement specification, contract management, system design and development, and bus flight software (we do not intend to imply that these are the only areas with difficulties, or the only ones that need new theories; they are merely indicative of the widespread problem). We describe these difficult areas as we have seen them, describe the applicable theories (proposing new ones when necessary), and describe how the theory will change the practice of space system development.","PeriodicalId":403272,"journal":{"name":"2011 IEEE Fourth International Conference on Space Mission Challenges for Information Technology","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130534374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Large Terrain Modeling and Visualization for Planets","authors":"Steven Myint, Abhinandan Jain, J. Cameron, C. Lim","doi":"10.1109/SMC-IT.2011.11","DOIUrl":"https://doi.org/10.1109/SMC-IT.2011.11","url":null,"abstract":"Physics-based simulations are actively used in the design, testing, and operations phases of surface and near-surface planetary space missions. One of the challenges in real-time simulations is the ability to handle large multi-resolution terrain data sets within models as well as for visualization. In this paper, we describe special techniques that we have developed for visualization, paging, and data storage for dealing with these large data sets. The visualization technique uses a real-time GPU-based continuous level-of-detail technique that delivers multiple frames a second performance even for planetary scale terrain model sizes.","PeriodicalId":403272,"journal":{"name":"2011 IEEE Fourth International Conference on Space Mission Challenges for Information Technology","volume":"275 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127549598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transforming the Operations Paradigm of Space Exploration","authors":"M. Leonard, L. Baroff","doi":"10.1109/MAES.2011.5958759","DOIUrl":"https://doi.org/10.1109/MAES.2011.5958759","url":null,"abstract":"The international Space community has become comfortable over the years with a model of operations that is based on verbal delegation of operations control from a mission control center based on Earth. This model requires near-constant telemetry regarding the status of the vehicle, as well as tasks on-board. The future long-duration exploration missions being considered will require significant changes in this operational paradigm, adjusting to situational realities, capitalizing on the evolution that has occurred in vehicle autonomous health management, and maximizing the time crewmembers can devote to exploration. NASA has created an exploration strategy aimed at multiple destinations, utilizing multiple assets during operations, and increasing both the distance to exploration objectives and the duration of exploration flights. While developing the Lunar Malapert Excursion as a reference mission, our team began to understand that transitioning the world's space operations community from the current paradigm of near constant and all-inclusive vehicle status and task reporting, to a more autonomous self-management paradigm, would take both time and clear explanation of the benefits of the new approach. The new paradigm will take advantage of advances in health management systems and operational planning tools that allow on-board operators the ability to self-manage a significant set of decision parameters, allowing crew the independence to set priorities and adapt their exploration activities as necessary for their situation.","PeriodicalId":403272,"journal":{"name":"2011 IEEE Fourth International Conference on Space Mission Challenges for Information Technology","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129816038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}