AFRL-AFOSR-VA-TR-2015-0329Transformative Advances in DDDAS with Application to Space Weather MonitoringDennis BernsteinUNIVERSITY OF MICHIGANFinal Report10/01/2015DISTRIBUTION A: Distribution approved for public release.AF Office Of Scientific Research (AFOSR)/ RTA2Arlington, Virginia 22203Air Force Research LaboratoryAir Force Materiel CommandDISTRIBUTION A: Distribution approved for public release.
a. REPORTUnclassifiedb. ABSTRACTUnclassifiedc. THIS PAGEUnclassifiedREPORT DOCUMENTATION PAGEForm ApprovedOMB No. 0704-0188The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existingdata sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate orany other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Executive Services, Directorate (0704-0188).Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of informationif it does not display a currently valid OMB control number.PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ORGANIZATION.1. REPORT DATE(DD-MM-YYYY)19-10-20152. REPORT TYPEFinal Performance3. DATES COVERED(From - To)01-09-2012 to 14-10-20154. TITLE AND SUBTITLETransformative Advances in DDDAS with Application to Space Weather Monitoring5a. CONTRACT NUMBER5b. GRANT NUMBERFA9550-12-1-04015c. PROGRAM ELEMENT NUMBER61102F6. AUTHOR(S)Dennis Bernstein5d. PROJECT NUMBER5e. TASK NUMBER5f. WORK UNIT NUMBER7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)UNIVERSITY OF MICHIGAN503 THOMPSON STANN ARBOR, MI 48109-1340 US8. PERFORMING ORGANIZATIONREPORT NUMBER9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)AF Office of Scientific Research875 N. Randolph St. Room 3112Arlington, VA 2220310. SPONSOR/MONITOR'S ACRONYM(S)AFRL/AFOSR RTA211. SPONSOR/MONITOR'S REPORTNUMBER(S)12. DISTRIBUTION/AVAILABILITY STATEMENTA DISTRIBUTION UNLIMITED: PB Public Release13. SUPPLEMENTARY NOTES14. ABSTRACTThis project focused on DDDAS-motivated developments in support of space weather monitoring andprediction. The project involved four interrelated tasks relating to physics-driven adaptive modeling, adaptivedata assimilation with input reconstruction, event-based sensor reconfiguration, and optimization ofscheduling. For data assimilation, the emphasis has been on model refinement. The problem of estimatingthe eddy diffusion coefficient using total electron content measurements has led to new techniques fordetermining the essential modeling details needed by the retrospective cost model refinement technique.