The European Space Agency Tender

An End-to-end Simulator (e2es) Is A Complete End-to-end Chain Of Software Modules Representing Both The Space Segment And The Ground Segment Of The Mission. This Chain Allows Simulating The Complete Process And Flow From A Simulated Scene (the Reference Scene) To The L1 And L2 Data Products. Comparison Of The Output With The Input After Introducing To The Process Noise, Measurement Errors, Different Instrument Models, And Different L1 And L2 Algorithms Characterizes The System Performance And Its Sensitivity To These Variable Parameters. In The Early Phases Of A Mission, The E2es Supports Activities Like Performance Consolidation At Mission Level, Quantification Of Trade-offs Impact On The Mission Product, Early Preparation Of User Community For Mission Exploitation And The Definition And The Verification Of The Space Segment Requirements. In Later Phases The E2es Is Developed With Three Main Objectives:1. To Provide The Engineers A Tool To Predict System Performance (based On Figures Of Merit (fom) - Or Metrics).2. To Provide The Scientific And End Users A Tool To Help Them In The Implementation And Improvement Of The Retrieval Algorithms (including Both L1 And L2).3. To Generate Test Data Sets That Can Help Preparing The Readiness Of A User Community To Exploit The Satellite Data Sets.furthermore, In The Frame Of Lstm, The E2es Shall Provide The Required Simulation Environment To Support The Science Readiness Level Evaluation During Lstm Implementation Phase (b2cde) Until Successful Achievement Of Srl Level 6.