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本文给出NASA空间组合GPS/INS系统(SIGI)项目的研制概况。该项目利用GPS提供的位置、速度、时间和姿态信息为国际空间站乘员返回舱(CRV)研制高度综合的自主导航系统。引言一次性使用的运载工具和可重复使用的运载工具、卫星以及载人航天器对低成本、高性能自主制导和导航系统的需求正在日益增加,因此空间应用领域需要选用军用成品(MOTS)和商用成品(COTS)航空电子系统的产品和结构。项目成功的关键在于导航系统是否有能力利用GPS位置、速度和姿态的观测量进行自主初始化和校正惯性导航解和姿态解。
This paper presents a survey of the development of the NASA Space Integrated GPS / INS System (SIGI) project. The project developed a highly integrated, autonomous navigation system for the International Space Station Crew Return (CRV) using the GPS’s location, velocity, time and attitude information. Introduction The demand for low-cost, high-performance autonomous guidance and navigation systems for single-use vehicles and reusable vehicles, satellites and manned spacecraft is on the rise. Therefore, the use of military products (MOTS) and Commercial Finished Products (COTS) Avionics Systems Products and Structures. The key to the success of the project lies in whether the navigation system is capable of autonomous initialization and correction of inertial navigation solutions and attitude solutions using GPS position, velocity and attitude observations.