Guidance, Control, and Astrodynamics Seminar Series Thursday, February 11, 2010 - 4:10-5:00 PM -
Thursday, February 11, 2010 - 4:10-5:00 PM -1235 Howe Hall
Computational Challenges for Orbit Determination with Application to Asteroid DeflectionAstrodynamical problems involving orbital determination and prediction are often nonlinear, and computational simulation of the results can be difficult and expensive. Ways to parallelize perturbation algorithms for relative motion problems will be discussed. Application on both Shared-Memory Parallel (SMP) and Distributed-Memory Parallel (DMP) architectures is shown, with enough detail to guide solution of a simple problem. The methods presented have resulted in quasi-linear speedup with additional processing capability, allowing modern multi-core desktop systems to have faster time-to-solution than an equivalent serial program on the same computer. Results of hydrodynamic simulation of a fragmented asteroid were used as input conditions for orbital simulation including mutual gravitational effects. The improvements made to past versions of the simulation program will be presented, as well as the issues of load-balancing and thread scheduling in this application. This talk emphasizes the efficient use of orbital simulation algorithms to achieve cutting-edge and verifiable results in the asteroid deflection community.Bio: Brian Kaplinger received his BS in Aerospace Engineering from Iowa State in 2009. He has received scholarships and awards for research from Iowa State University, NASA, and the Universities Space Research Association. Currently, Brian is pursuing a Ph.D. in Aerospace Engineering under Prof. Bong Wie. His research interests include Astrodynamics, Optimization, Applied Mathematics, and Computational Algorithms.