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Summary of Proposal MTH0741

TitleIntegrated Actic Monitoring from Space
Investigator Johnsen, Harald - Norut Informasjonsteknologi AS, Earth Observation
Team Member
Dr. Mouche, Alexis - CLS, CLS - DAR
MSc Bauna, Tony - Kongsberg Satellite Services, Remote Sensing
Dr. Hannevik, Tonje Nanette - Forsvarets Forskningsinstitut, Land- og luftsysteme
Summaryobjectives: - Validate physical based forward models for ocean wind/wave/current at X-band - Develope and validate inversion algorithm for ocean wind/wave/current - Develope and validate ship/ice bergs detection and tracking algorithm utilizing multiple SAR satellites - Develope concept algorithm/system for Arctic monitoring Methods: X-band scattering models derived from combining semi-emphirical C- and L-band model has shown promising results. Performance of such model for HH polarization is still an open issue. Pure physical based scattering model applicable to X-band in various polarization does also exist, but limited validation of these models in X-band has so far been done. Validation of backscattering models and subsequent wind retrieval will be a key issue in this project. Modulation transfer functions providing the wave information will be validated for X-band data. In particular the development of physical based MTF will be assessed for X-band data. Super-resolution based target detection (ship, iceberg) at high-resolution X-band data will be a evaluated. The well-known Capon method, originally proposed to estimate frequency-wavenumber power spectral density, has widely been applied to spectral estimation, direction-of-arriveal estimation, and adaptive filtering. It can also bee used for complex spectral estimation producing high-resolution (super-resolution) SAR images with low sidelobes and reduced spekle. It it thus well suited for improving target detection and recognition in complex SAR images. The high-resolution TerraSAR-X data is ideal for testing this algorithm because the likelihood of having only a few dominant scatterer within a resolution cell. The target tracking activity will look at available tracking algorithms and assess their suitability for use to track ships and icebergs in the Arctic region. Based on this a tracking prototype will be developed based on test on real data and targets. TerraSAR-X data will be combined with Radarsat 2 data. The method will identify a set of parameters that need to be extracted from the targets necessary for the tracking, and the detection methods will be updated to extract this information. The outcome of the super-resolution technique will provide what target parameters to track. Data: The TerraSAR-X data required are dual polarization stripmap products (SLC), dual polarization spotlight product (SLC), ScanSAR products. The total amount of data required is <30 scenes. Time period of data acquisitions must be between April 2010 - June 2010. Deliverables: 1) Paper on X-band scattering models and wind retrieval 2) Paper on X-band MTF and wave retrieval 3) Paper on target detection and tracking Funding: The project is funded by Kongsberg Satellite Services.

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