Deep Space Optical Communications

Foreword

Preface

Acknowledgments

Contributors

Chapter 1 : Introduction (James R . Lesh)

1.1 Motivation for Increased Communications

1.2 History of JPL Optical Communications Activities

1.3 ComponentlSubsystem Technologies

1.4 Flight Terminal Developments

1.5 Reception System and Network Studies

1.5 .7 EOORT Hybrid Study

1.6 Atmospheric Transmission

1.7 Background Studies

1.8 Analysis Tools

1.9 System-Level Studies

1.1 0 System-Level Demonstrations

1 .1 0. 1 Galileo Optical Experiment (GOPEX)

1.1 0.3 Groundlorbiter Lasercomm Demonstration (GOLD)

1.10 .4 Ground-Ground Demonstrations

1.11 Other Telecommunication Functions

1.12 The Future

1.1 2.5 Alternate Ground-Reception Systems

1.13 Mars Laser Communication Demonstration

1.14 Summary of Following Chapters

References

Chapter 2: Link and System Design (Chien-Chung Chen)

2.1 Overview of Deep-Space Lasercom Link

2.2 Communications Link Design

2.3 Beam Pointing and Tracking

2.4 Other Design Drivers and Considerations

2.5 Summary

References

Chapter 3: The Atmospheric Channel (Abhijit Biswas and Sabino Piazzolla)

3.1 Cloud Coverage Statistics

3.2 Atmospheric Transmittance and Sky Radiance

3.3 Atmospheric Issues on Ground Telescope Site Selection for an Optical Deep Space Network

3.4 Laser Propagation Through the Turbulent Atmosphere

References

Chapter 4: Optical Modulation and Coding (Samuel J . Dolinar. Jon Hamkins. Bruce E . Moision and Victor A . Vilnrotter)

4.1 Introduction

4.2 Statistical Models for the Detected Optical Field

4.3 Modulation Formats

4.4 Rate Limits Imposed by Constraints on Modulation

4.5 Performance of Uncoded Optical Modulations

4.6 Optical Channel Capacity

4.7 Channel Codes for Optical Modulations

4.8 Performance of Coded Optical Modulations

References

Chapter 5: Flight Transceiver (Hamid Hemmati. Gerardo G . Ortiz. William T . Roberts, Malcolm W . Wright,

HAMID HEMMATI, PhD, is a principal member of the technical staff and the Technical Group Supervisor of the JPL Optical Communications Group, which is developing optical communication technologies to and from spacecraft in Earth orbit and deep space. Dr. Hemmati has published more than 100 journal and conference papers, holds seven patents, and has received thirty NASA Certificates of Recognition.