A 3 Analysis of Alternative Orbits (Operational Requirements) Discipline: Aerospace Engineering (Celestial Mechanics) Volume: 3-4 Manmonths Conditions: A 1 , A 2, B 21 Priority: Medium Iterns: Inclined 24-hour-orbits / Sunsynchronous orbits (lower orbits) / tibrational points / Other orbits/ A 4 SPS Redesign Analysis for Extended GEO-Utilisation Discipline: Aerospace Engineering Volume: 4-6 Manmonths Conditions: A 1, A 2, B 21 Priority: Med ium Items: Increased power per unit / MPTS power level verification / System efficiency increase / B 11 MPTS-Frequency Variation Feasibility Analysis Discipline: Microwave Engineering Volume: 4-6 Manmonths Conditions: MPTS-reference System / Microwave (2.45 GHz) Impacts Priority: Medium to High Iterns: RF-Elements investigation for higher frequencies / Systems analysis / Antenna design impacts / Rectenna design impacts /
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