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Pioneer Venus Star SensorThe design predictions and orbital performance verification of the solid state star scanner used in the Onboard Attitude Control of the Pioneer Venus Orbiter and Multiprobe are presented. The star sensor extended the scanner use to active despin control, and it differs from previous sensors in solid state detection, redundant electronics for reliability, larger field of view, and large dynamic spin range. The star scanner hardware and design performance based on the ability to predict all noise sources, signal magnitudes, and expected detection probability are discussed. In-flight data collected to verify sensor ground calibration are tabulated and plotted in predicted accuracy curves. It is concluded that the Pioneer Venus Star Sensor has demonstrated predictable star calibration in the range of .1 magnitude uncertainties and usable star catalogs of 100 stars with very high probabilities of detection, which were much better than expected and well within the mission requirements.
Document ID
19790052543
Document Type
Conference Paper
Authors
Gutshall, R. L. (Ball Corp. Ball Aerospace Systems, Boulder, Colo., United States)
Thomas, G. (Hughes Aircraft Co. El Segundo, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
February 1, 1979
Subject Category
SPACECRAFT INSTRUMENTATION
Report/Patent Number
AAS PAPER 79-004
Meeting Information
American Astronautical Society, Annual Rocky Mountain Guidance and Control Conference(Keystone, CO)
Funding Number(s)
CONTRACT_GRANT: NASA 8300
Distribution Limits
Public
Copyright
Other