The Deep Space Network Progress Report 42-23

July and August 1974


October 15, 1974

NASA Logo
National Aeronautics and
Space Administration

Jet Propulsion Laboratory
California Institute of Technology
Pasadena, California


Contents

Preface

DESCRIPTION OF THE DSN

DSN Functions and Facilities
N. A. Renzetti

DSN Telemetry System, 1973-1976
E. C. Gatz
NASA Code 311-03-42-94

DSN Tracking System Predictions
W. D. Chaney and O. B. Shows
NASA Code 311-03-42-95

MISSION SUPPORT

Ongoing Planetary/Interplanetary Flight Projects

Viking Mission Support
D. J. Mudgway and D. W. Johnston
NASA Code 311-03-21-70

Helios Mission Support
P. S. Goodwin
NASA Code 311-03-21-50

Helios Prototype Spacecraft Deep Space Network Compatibility Test Summary
A. I. Bryan
NASA Code 311-03-02-21

Advanced Flight Projects

Pioneer Venus 1978 Mission Support
R. B. Miller
NASA Code 311-03-21-90

SUPPORTING RESEARCH AND TECHNOLOGY

Communications - Spacecraft/Ground

Low-Noise Receivers: Microwave Maser Development
R. B. Quinn
NASA Code 310-20-66-01

S/X Experiment: A Study of the Effects of Ambient Temperature on Ranging Calibrations
T. Y. Otoshi
NASA Code 310-20-66-06

Characteristics and Simulated Performance of Short Convolutional Codes: Length 7, Rate 1/3
J. W. Layland
NASA Code 310-20-67-08

Performance Degradation of Uncoded and Sequentially Decoded PSK Systems Due to Log-Normal Fading
B. K. Levitt
NASA Code 310-20-67-08

Network Control and Data Processing

Data Structure Design Guidelines
R. C. Tausworthe
NASA Code 310-40-72-05

High-Speed Data Throughput
J. P. McClure
NASA Code 310-40-70-03

"Tutorial Input" - Standardizing the Computer/Human Interface
A. I. Zygielbaum
NASA Code 310-40-72-02

NETWORK ENGINEERING AND IMPLEMENTATION

Deep Space Stations

Helios Spin-Modulation Doppler Effects
N. C. Ham
NASA Code 311-03-42-47

A Proposed Method of Reducing the Gravity Distortions of the 64-Meter Antenna Main Reflector
M. S. Katow
NASA Code 311-03-42-51

Three-Spacecraft Simulation for Viking 1975
M. M. Whang
NASA Code 311-03-42-48

OPERATIONS

Network Operations

AGC Calibration Accuracy
G. L. Stevens
NASA Code 311-03-14-52

Sequential Decoding in the Presence of a Noisy Carrier Reference
J. R. Lesh
NASA Code 311-03-14-52

Real-Time High-Rate Telemetry Support of Mariner 10 Operations
J. T. Hatch and J. W. Capps
NASA Code 311-03-21-60

PLANNING AND FACILITIES

TDA Planning

Goldstone DSCC Energy Distribution Model
B. H. Chapman
NASA Code 311-03-31-30


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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