1、User Needs and Requirements#EUSpaceReport on Space2023 Page 1 TABLE OF CONTENTS 1 INTRODUCTION AND CONTEXT OF THE REPORT.3 1.1 Methodology.4 1.2 Scope.5 2 EXECUTIVE SUMMARY.6 3 MARKET OVERVIEW&TRENDS.8 3.1 Market Evolution and Key Trends.8 3.2 Main User Communities.12 3.3 Main Market Players.13 4 PO

2、LICY,REGULATION AND STANDARDS.15 4.1 Applicable regulations.15 4.2 Non-regulatory sources.16 5 USER REQUIREMENTS ANALYSIS.18 5.1 Current GNSS/SST use and requirements per sub-segment.20 5.2 Limitations of GNSS and SST.43 5.3 Prospective use of GNSS and SST.46 5.4 Summary of drivers for user requirem

3、ents.47 5.5 Synergies with SST and/or SatCom.48 6 USER REQUIREMENTS SPECIFICATION.49 6.1 Synthesis of Requirements Relevant to GNSS.49 6.2 Synthesis of Requirements Relevant to EO.53 6.3 Sources for the requirements.53 7 ANNEXES.54 A.1 Definition of key GNSS performance parameters.54 A.2 Definition

4、of key EO performance parameters.56 A.3 Other performance parameters.57 A.4 List of Acronyms.58 A.5 Reference Documents.61 Page 2 LIST OF FIGURES Figure 1-1:Space user requirements analysis methodology.4 Figure 3-1:Space GNSS applications sub-segments.8 Figure 3-2:Forecast of revenue of spaceborne G

5、NSS devices by receiver category.10 Figure 3-3:Forecast of revenue of GNSS by region.11 Figure 3-4:The GNSS value chain in the Space segment.13 Figure 5-1:Render from SES-17 GEO satellite.21 Figure 5-2:TriHex architecture,sun view(credits:ESA).25 Figure 5-3:Artists view of TopSat in Earth orbit(imag

6、e credit:QinetiQ).27 Figure 5-4:Radio-Occultation diagram(source:RD-19).30 Figure 5-5 Sentinel-6 Michael Freilich Instruments,top view(source:ESA).32 Figure 5-6:HydroGNSS concept(image credit:HydroGNSS Team).33 Figure 5-7:LADEES Translunar orbit&phasing(source:NASA Goddard).35 Figure 5-8:Timeline of