1. SWOT mission Current and ongoing activities at CNES

2. NOV-5034-SL-094 SWOT mission: Current and ongoing activities at CNES 25/07/2007 2 End-to-end altimeter mission simulator Current status: end-to-end altimeter mission simulator for storm surges observation Possibility of studying multi-missions altimetry configurations Easy tuning of orbit configurations parameters AnalyzerSampler Multi-missions obs. systems Tides Storm surges Oceanic circulation Tides aliasing diagnostics Altimetry configuration performances

3. NOV-5034-SL-094 SWOT mission: Current and ongoing activities at CNES 25/07/2007 3 End-to-end altimeter mission simulator Percentage of variance reduction 1 WSOA on a JASON orbit 100 70 40 JASON-1  Efficient tool to estimate the performances of various altimetry configuration and to discriminate among them.  Allow to design orbit and assess performances of multi- satellite altimetry systems NB: the higher the percentage of variance reduction, the more the altimeter mission will provide helpful information to storm surges models

4. NOV-5034-SL-094 SWOT mission: Current and ongoing activities at CNES 25/07/2007 4 Ongoing activities at CNES Ongoing work: adapt the end-to-end altimeter mission simulator to study the aliasing of tides in SWOT measurements featuring particular studies on: Minimal mission duration for tidal spectrum determination  Stability of tidal wave solution  Convergence criterion Aliasing of tidal energy  Spectral analysis of aliased tidal energy  Mapping of the major alias peaks Multi-mission context  Optimal SWOT mission?