本文简要地介绍了采用微型计算机 Cromemco 系统Ⅲ实现地球同步卫星实时姿态确定软件系统(RTAD)的基本程序结构、方法及原理。RTAD充分考虑了微型计算机的特点,采取了一系列程序技术、数值方法和分析手段,保证在微型机上运行的RTAD能在实时环境下,对卫星在转移轨道和同步轨道的姿态作出高精度的估计。 This paper briefly introduces the basic program structure, method and principle of real-time attitude determination software system for geostationary satellite (RTAD) using microcomputer Cromemco system III. RTAD fully considers the characteristics of microcomputer and adopts a series of program techniques, numerical methods and analysis methods to ensure that the RTAD running on the microcomputer can accurately estimate the attitude of the satellite in the transfer orbit and the synchronous orbit in a real-time environment .