ATTITUDE REFERENCE AS ESTABLISHED BY A HORIZON SCANNER

Abstract

An attitude reference frame is defined which is the natural frame defined by a horizon scanner and certain requirements on the forward direction. Relative to this frame there is no systematic sensor error, but its motion introduces inertial reaction torque disturbances into the system. Magnitudes and time structure of the latter are examined for several specific cases. It is concluded that if disturbance torque levels of the order of 100 dyne-cm are negligible in the system, the horizon scanner reference frame can replace a geocentric vertical frame ad libitum. Otherwise, allowance must be made for the contribution to inertial reaction torque caused by the difference between these frames. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 19, 1961
Accession Number
AD0261140

Entities

People

  • Robert E. Roberson

Organizations

  • The Aerospace Corporation

Tags

DTIC Thesaurus Topics

  • Attitude Indicators
  • Flight Instruments
  • Horizon Scanners
  • Scanners

Readers

  • Control Systems Engineering.
  • Image Processing and Computer Vision.
  • Space Exploration and Orbital Mechanics.