Troposphere, Ionosphere, GPS, and Interferometric Radar (TIGIR) Workshop Proposal; Sepember 21-22, 2009 in Pasadena, CA

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The PIs will convene a workshop to bring together experts and stake-holders insynthetic aperture radar and GNSS systems, the data processing and the products theygenerate. The workshop will examine the wide range of different approaches that havebeen developed to understand and mitigate the atmospheric ?noise? in SAR signals, andestablish the current best-practices in atmospheric imaging and mitigation techniques,generate priorities for further investigations, and recommendations for upcomingmissions for how best to maximize the utility of the data products they will produce.Ionospheric and tropospheric imaging using SAR and GNSS and stochastic anddeterministic modeling have great potential for correcting media effects on spacegeodetic systems, however, although many of these approaches have shown promise inparticular circumstances, effectiveness and general applicability are yet to bedemonstrated. Small amplitude, non-linear and non-periodic ground motion signalsabound in geodesy from a wide range of sources, and InSAR holds great promise forgiving us new insights into these types of physical phenomena. For a wide spectrum ofthe signals we might hope to explore, however, the delays induced in the SAR signals bythe ionosphere and the troposphere overprint and confuse the interpretation ofinterferograms.This workshop is multi-disciplinary bringing together atmosphericand solid earth researchers, operational centers and technologists to find ways tounderstand and mitigate the effects of the atmosphere on new satellite SAR systems.Coupled with the compelling hazards research applications of SAR and GPS, thisworkshop provides an excellent venue to engage students. Two students and one careerresearcher will be recruited from a pool of protégés from UNAVCO and UCAR?sRESESS and SOARS summer internship program. These two programs have operated inpartnership for many years providing research opportunities for students fromunderrepresented groups. In addition, a workshop report of the results and outcomes ofthe workshop and statement of recommendations for upcoming SAR missions will begenerated after the meeting and disseminated via the UNAVCO website.