The Telecommunications and Mission Operations Progress Report 42-141

January-March 2000

Joseph H. Yuen
Editor in Chief


May 15, 2000

NASA Logo
National Aeronautics and
Space Administration

Jet Propulsion Laboratory
California Institute of Technology
Pasadena, California


Contents

Preface

List of Changes

Ground-to-Ground Optical Communications Demonstration
A. Biswas and S. Lee

Adaptive Detector Arrays for Optical Communications Receivers
V. Vilnrotter and M. Srinivasan

Ceramic Waveguides
C. Yeh, F. Shimabukuro, P. Stanton, V. Jamnejad, W. Imbriale, and F. Manshadi

Improved Carrier Tracking for Low-Threshold Telemetry Using a Smoother
W. J. Hurd and A. Mileant

Computationally Intelligent Array Feed Tracking Algorithms for Large DSN Antennas
R. Mukai, V. Vilnrotter, P. Arabshahi, and V. Jamnejad

An Improved X-Band Maser System for Deep Space Network Applications
M. Britcliffe, T. Hanson, and J. Fernandez

A Demonstration of Dual K-Band Frequency Radiometry With the Deep Space Network 70-Meter Antennas
G. Lanyi and C. Naudet

Altimeter Range Processing Analysis for Spacecraft Navigation About Small Bodies
J. J. Bordi, P. G. Antreasian, J. K. Miller, and B. G. Williams

A Comparison of Close-Proximity Operations at Asteroids and Comets
D. J. Scheeres

Development of a Bird Net Cover for DSN Beam-Waveguide Antennas
T. Y. Otoshi, W. Veruttipong, and J. Sosnowski

A High-Q Millimeter-Wave Dielectric-Resonator Bandpass Filter Using Whispering-Gallery Modes
Y. Ji, X. S. Yao, and L. Maleki


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.


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