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Towards operational use of SAR imagery for coastal monitoring: State of the art and Prospects

Towards operational use of SAR imagery for coastal monitoring: State of the art and Prospects Vincent KERBAOL and Fabrice COLLARD. Introduction. Increasing interest for SAR imagery : High resolution, independency upon solar illumination and clouds coverage

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Towards operational use of SAR imagery for coastal monitoring: State of the art and Prospects

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  1. Towards operational use of SAR imagery for coastal monitoring: State of the art and Prospects Vincent KERBAOL and Fabrice COLLARD Vincent.kerbaol@boost-technologies.com

  2. Introduction • Increasing interest for SAR imagery : • High resolution, independency upon solar illumination and clouds coverage • Mature SAR marine and coastal applications for environment and security purpose • GMES initiative at ESA/EU level to support marine environmental services at institutional level • Increasing demand for coastal information • Migration towards high resolution • Support development of marine coastal activities • Potentialities of SAR imagery are poorly known (and supported) in France Vincent.kerbaol@boost-technologies.com

  3. SAR data availability • Today: • Future: • 2005: Alos PALSAR (L), RADARSAT-2 (C), TerraSAR-X, TerraSAR-L, COSMO Skymed (X) • 2006: SAOCOM (L) • Sentinel 1 (ESA), RISAT (India) • 2012: NPOESS (L,C) or (L,X) Vincent.kerbaol@boost-technologies.com

  4. SAR derived marine applications • Demonstration/Operational • Oil spill monitoring • Ship detection • High resolution winds fields • Two dimensional wave spectrum retrieval • Under development • Coastal wave fields • Sea surface motion monitoring (Doppler maps) • Research • Oceanic/atmospheric phenomena detection & identification Vincent.kerbaol@boost-technologies.com

  5. Marine SAR monitoring systems Vincent.kerbaol@boost-technologies.com

  6. Ship detection • Applications • Fisheries control • Pollution control (+ AIS) • Information • Date/Time • Position • Size • Heading (if HiRes or wake) • Speed (if wake) • Required evolution • Coupling with AIS Vincent.kerbaol@boost-technologies.com

  7. Oil discharge Pollutant Oil spill monitoring • Service description • Geo-location, date • Parameters: area, size, orientation, complexity, contrast • Reliability • Source (Ship, platform, …) • Metocean conditions • Early warning system: • Semi-automatic detection scheme • Validation by a trained operator • Required evolution • Ancillary information to reduce FAR (ambiguous slicks) • Coupling with AIS Vincent.kerbaol@boost-technologies.com

  8. Traffic Separation Scheme off Finisterre Slicks detection ENVISAT Wide Swath Image 17-NOV-2002 10:45:03 Ship detection SAR Wind field Vincent.kerbaol@boost-technologies.com

  9. Tramontane Relief shadowing Funnelling effect High resolution wind fields • High resolution scatterometer • Resolution < 1 km • sU10 = 2 m/s , s = 25° • Applications • Near real-time: • Coastal wind field measurement • Inputs for oil spills/ships detection systems • Long term: • Understanding costal dynamics • Monitoring and study of meteorological phenomena • Wind farm design, wind resource assessment. Vincent.kerbaol@boost-technologies.com

  10. Cherbourg Jersey Coastal wave fields • Only SAR enables global 2D swell spectrum measurement • SWH retrieval error less than 40 cm in 50 % of cases • Applications • Coastal wave statistics (demonstration for SHOM) • Assimilation in numerical models • Global/local atlas (Wave/Image mode Mode) • Bathymetry retrieval Refraction and masking in the lee of Channel islands Vincent.kerbaol@boost-technologies.com

  11. Sea surface motions monitoring • Doppler centroïd analysis • Maps of Doppler • Applications • Accurate current front detection • Meso-scale circulation and tidal currents signatures • Fishing zones Vincent.kerbaol@boost-technologies.com

  12. Towards operational use • Requirements: • Lower SAR data pricing • Anticipate multi sensor merging to improve QoS • Secure long-term operational access to data with both constraints: • Continuous coverage over western Europe • Near real time data availability • How can it work? • Deployment of a satellite receiving/processing station • National level support (Data access right) Vincent.kerbaol@boost-technologies.com

  13. Conclusion • Marine safety and environmental management cannot afford ignoring high resolution and observation capacity of SAR • Significant progress: • Mature processing techniques and products • Beginning of a decade with over 6 SAR flying simultaneously • The gain/cost of SAR system for GMES is to be considered • Successful demonstration of operational SAR-derived marine products • AKDEMO (Alaska) • CSTARS (US) • SATHAV (Norway)  Time to support operational use of SAR Vincent.kerbaol@boost-technologies.com

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