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

November 2007

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

Introduction

Approach and Objective

Survey of Current and Future Missions

Figure. Mission Timing Survey Respondents and Mission Web Sites

Requirements

Figure. Time Architecture Functional Requirements

Figure. Time Architecture Derived Requirements

Architecture

Figure. Time Architecture Components Accuracy / Precision

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

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

Figure. Time Transfer Method Characteristics

Figure. Time Transfer Delays User Accommodations

Operations Concept Development Mission Domains

Figure. Mission Domain Definitions

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