The Telecommunications and Data Acquisition Progress Report 42-131

July-September 1997

Joseph H. Yuen
Editor-in-Chief


November 15, 1997


National Aeronautics and
Space Administration

Jet Propulsion Laboratory
California Institute of Technology
Pasadena, California


Contents

Preface

Mars Pathfinder Entry, Descent, and Landing Communications
G. E. Wood, S. W. Asmar, T. A. Rebold, and R. A. Lee
NASA Code 314-30-21-00-06

The True Performance of the Simplified Data-Transition Tracking Loop
M. K. Simon
NASA Code 314-30-11-20-04

On the Power Spectrum of Digital Frequency-Modulated Signals
M. K. Simon
NASA Code 314-40-23-70-17

On the Power Spectrum of Angle-Modulated Phase-Shift-Keyed Signals Corrupted by Intersymbol Interference
M. K. Simon
NASA Code 314-40-23-70-17

False Lock Performance of I-Q Costas Loops for Pulse-Shaped Binary Phase Shift Keying
M. K. Simon
NASA Code 314-40-23-70-17

An All-Digital, High Data-Rate Parallel Receiver
M. Srinivasan, C.-C. Chen, G. Grebowsky, and A. Gray
NASA Code 314-30-11-20-06

MicroGPS for Low-Cost Orbit Determination
S. C. Wu, W. I. Bertiger, D. Kuang, S. M. Lichten, S. Nandi, L. J. Romans, and J. M. Srinivasan
NASA Code 314-30-11-50-07

Neptune Revisited: Synthesizing Coherent Doppler From Voyager's Noncoherent Downlink
T. A. Rebold, M. Tinto, S. W. Asmar, and E. R. Kursinski
NASA Code 314-30-21-00-06

VLBI DSN Flux Density Observations From 1989 to 1996 of 290 Extragalactic Radio Sources
R. F. Coker, C. S. Jacobs, and L. E. Iriks
NASA Code 314-40-29-03-02

Results of the Compensated Earth-Moon-Earth Retroreflector Laser Link (CEMERLL) Experiment
K. E. Wilson, P. R. Leatherman, R. Cleis, J. Spinhirne, and R. Q. Fugate
NASA Code 315-91-70-10-01


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.