The Telecommunications and Mission Operations Progress Report 42-145

January-March 2001

Joseph H. Yuen
Editor in Chief


May 15, 2001

NASA Logo
National Aeronautics and
Space Administration

Jet Propulsion Laboratory
California Institute of Technology
Pasadena, California


Contents

Note From the Editor

Preface

List of Changes

The Media Calibration System for Cassini Radio Science: Part II
G. M. Resch, J. E. Clark, S. J. Keihm, G. E. Lanyi, C. J. Naudet, A. L. Riley, H. W. Rosenberger, and A. B. Tanner

Calibrating Surface Weather Observations to Atmospheric Attenuation Measurements
B. Sanii

Mounting a Water Vapor Radiometer on a DSN Antenna Subreflector: Benefits for Radio Science and Millimeter-Wavelength VLBI
R. Linfield

A Reduced-Complexity, Highly Power-/Bandwidth-Efficient Coded Feher-Patented Quadrature-Phase-Shift-Keying System with Iterative Decoding
M. K. Simon and D. Divsalar

Further Results on Bandwidth-Efficient Trellis-Coded Modulation with Prescribed Decoding Delay
M. K. Simon, S. Darden, and M. Fong

Measured Sun Noise Temperatures at 32 Gigahertz
T. Y. Otoshi

Development of a 7.2-, 8.4-, and 32-Gigahertz (X-/X-/Ka-Band) Three-Frequency Feed for the Deep Space Network
P. H. Stanton, D. J. Hoppe, and H. Reilly

The Sensitivity of Main-Reflector-Distortion Compensation to Deformable-Mirror Position
D. J. Hoppe

Open- and Closed-Loop Analysis of the 70-Meter Antenna Subreflector Positioner
F. Baher

Determination of 70-Meter Antenna Elevation-Axis Inertia
J. Sommerville

Noise-Temperature Measurements of Deep Space Network Dichroic Plates at 8.4 Gigahertz
M. J. Britcliffe and J. E. Fernandez

The Effects of Water on the Noise-Temperature Contribution of Deep Space Network Microwave Feed Components
M. J. Britcliffe and R. C. Clauss

Main-Reflector Manufacturing Technology for the Deep Space Optical Communications Ground Station
M. J. Britcliffe and D. J. Hoppe


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.


Home