Retrospective Cost Model Refinement and State Estimation for Space Weather Modeling and Prediction
Abstract
The objective of the DDDAS application on space weather modeling is motivated by space situational awareness, with the goal is to enhance the ability to track objects in low-Earth orbit. The trajectories of these objects depend on atmospheric density and the resulting drag, which can change rapidly and in an unknown way due to space weather conditions. The U.S. Air Force estimates atmospheric density by tracking the trajectories of a collection of spheres in orbit around the globe. The orbits of these spheres provide density estimates that are in turn used to correct models of the thermosphere. In contrast, the goal of our DDDAS project is to achieve the same objective by using physics-based models, which potentially could more accurately capture the small-scale dynamics and achieve corrections to less than 5% error, which is the goal for the Air Force.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 23, 2016
- Source ID
- FA95501610071
Entities
People
- Dennis S. Bernstein
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Michigan