Session
Technical Session IV: New Hardware in Space
Abstract
MSTI-3, an advanced technology demonstration satellite, was launched on May 16, 1996, to collect data in the short wave infrared (SWIR) and medium wave infrared (MWIR) bands. MSTI-3's mission was to survey the Earth: collecting data to support analysis of ground features, such as terrain and bodies of water; and atmospheric features, such as clouds and aurora. In April 1997, MSTI-3 analysts computed a pointing offset of approximately 50 miles. This paper summarizes the detailed fault analysis implemented by the operations team, including steps taken to isolate the cause of the pointing error to the payload mirror gimbal roll encoder and the spacecraft's GPS position board. Procedures implemented to compensate for the gimbal roll encoder and position error are also described, including how the mission control team was able to respond to the need for a precise pointing ability for a series of special operations.
Miniature Sensor Technology Integration (MSTI) -3 Pointing Error Analysis and Compensation
MSTI-3, an advanced technology demonstration satellite, was launched on May 16, 1996, to collect data in the short wave infrared (SWIR) and medium wave infrared (MWIR) bands. MSTI-3's mission was to survey the Earth: collecting data to support analysis of ground features, such as terrain and bodies of water; and atmospheric features, such as clouds and aurora. In April 1997, MSTI-3 analysts computed a pointing offset of approximately 50 miles. This paper summarizes the detailed fault analysis implemented by the operations team, including steps taken to isolate the cause of the pointing error to the payload mirror gimbal roll encoder and the spacecraft's GPS position board. Procedures implemented to compensate for the gimbal roll encoder and position error are also described, including how the mission control team was able to respond to the need for a precise pointing ability for a series of special operations.
