2. NASA Architecture for Solar System Time Synchronization and Dissemination: Concept of Operations

7. November 2007

11. Dwarf planet Pluto and satellites. Credit: NASA, ESA, H. Weaver (JHU/APL), A. Stern (SwRI), and the HST Pluto Companion Search TeamNASA, ESA, H. Weaver (JHU/APL), A. Stern (SwRI), and the HST Pluto Companion Search Team

15. Introduction

16. Approach and Objective

17. Survey of Current and Future Missions

18. Figure. Mission Timing Survey Respondents and Mission Web Sites

19. Requirements

20. Figure. Time Architecture Functional Requirements

21. Figure. Time Architecture Derived Requirements

22. Architecture

23. Figure. Time Architecture Components Accuracy / Precision

24. Figure. Mission Time Precision Classification Timescale Transmit/Receive Stations Relays

25. Figure. Relays in a Challenged Network Radiometric User Platforms Correlation and Transfer Methods

26. Figure. Time Transfer Method Characteristics

27. Figure. Time Transfer Delays User Accommodations

28. Operations Concept Development Mission Domains

29. Figure. Mission Domain Definitions

30. Figure. Time Architecture Mission Domains – Domain 1 – Domain 2 – Domain 3 – Domain 4 Basic Tenets