NASA Technical Reports Server (NTRS) : Analysis pdf

NASA Technical Reports Server (NTRS) : Analysis

More Book Details

Description of the Book:

A member of the constellation of TDR satellites (TDRS) has experienced a failure of its prime earth sensor. Failure of the remaining earth sensor could result in the inability of the satellite to control its attitude and provide user services. Loss of the satellite would be a serious event. The multiple access (MA) antenna array on the TDRS has been proposed for use as a backup sensor for the attitude control system. This paper describes our analysis of the performance of the MA array as an interferometer used for accurate attitude determination. A least squares fit of a plane to the MA phase information appears to represent the TDRS body roll and pitch within about 0.1 deg. This is sufficient for SGL pointing and MA and SSA user services. Analytic improvements that include ionospheric correction may yield sufficient accuracy for KSA user services

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 11/1/1993
• Year: 1993
• Book Topics/Themes: NASA Technical Reports Server (NTRS), ANTENNA ARRAYS, ATTITUDE (INCLINATION), ATTITUDE CONTROL, INTERFEROMETERS, MULTIPLE ACCESS, SATELLITE CONTROL, TDR SATELLITES, GEOSYNCHRONOUS ORBITS, LEAST SQUARES METHOD, ROLL, Blevins, Bruce Allyn, Sank, Victor J

An excerpt captured from the PDF book