适合航天飞机应用的星体跟踪器

本文推导了航天飞机采用新型探测器件——电荷耦合器件CCD（ChargeCoupled DeVices）组成的星体跟踪器进行姿态稳定的公式。并提供一种适合航天飞机应用的星体跟踪器原理样机。

A STAR-TRACKER FOR SPACE SHUTTLE

A space shuttle is a large system engineering of high complexity. To ensure the safety and success of its flight, the navigation system of the space shuttle usually consists of an inertial reference system combined with others.During flight, especially re-entery, specified attitudes with certain precision are required. However, the inertial reference system exhibits accumulating drift errors in a long-term flight. To cope with this, a star-tracker is usually used to provide a basis for correcting the inertial reference. This results in an astro/inertial reference system. By heading and tracking some selected stars with known position and trajectory, the star-tracker provides necessary offsets for the gyro drift in the inertial system, thereby making the latter be able to give attitude information that meets the overall accuracy requirement.In this paper a formula is developed for the attitude stabilization of a space shuttle with a new type-charge-coupled sensor devices （CCD） used in the star-tracker. A scheme of the star-tracker is also presented.