The Telecommunications and Data Acquisition Progress Report 42-130

April-June 1997

Joseph H. Yuen
Editor-in-Chief


August 15, 1997


National Aeronautics and
Space Administration

Jet Propulsion Laboratory
California Institute of Technology
Pasadena, California


Contents

Preface

The Evolution of Technology in the Deep Space Network: A History of the Advanced Systems Program
J. W. Layland and L. L. Rauch
NASA Code 314-30-32-30-11

A New Approach in Spacecraft Monitoring for Efficient Use of the Deep Space Network
M. K. Sue, T. Peng, and E. J. Wyatt
NASA Code 314-40-31-40-02

Comparison of Global Positioning System and Water Vapor Radiometer Wet Tropospheric Delay Estimates
R. Linfield, Y. Bar-Sever, P. Kroger, and S. Keihm
NASA Code 314-30-11-90-02

Automated Generation of Antenna Tracking Plans: A Knowledge-Based Approach
S. Chien, A. Govindjee, F. Fisher, T. Estlin, X. Wang, and R. Hill, Jr.
NASA Code 314-30-11-70-09

A Simple Algorithm for Automated High-Efficiency Tracking
K.-M. Cheung
NASA Code 314-30-63-30-26

Hybrid Concatenated Codes and Iterative Decoding
D. Divsalar and F. Pollara
NASA Code 315-91-20-20-53

Iterative Information-Reduced Carrier Synchronization Using Decision Feedback for Low SNR Applications
M. K. Simon and V. A. Vilnrotter
NASA Code 315-90-41-13-04

The Effect of Phase and Amplitude Imbalance on the Performance of BPSK/QPSK Communication Systems
H. Tsou
NASA Code 315-90-41-13-04

Referees


The research described in this publication was carried out by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. Reference herein to any specific commercial product, service, process, or service by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement by the United States Government or the Jet Propulsion Laboratory, California Institute of Technology.