New Optimal Approach to Space-stable Inertial Navigation System

摘要：

Inertial navigation is typically performed using an instrumented platform stabilized in a local-level configuration. However, the local-level frame of reference must be maintained by gyro torquing, inducing attitude errors which may be intolerable for the more sensitive inertial devices currently being developed. Therefore, it is necessary to adopt space-stable mechanization to avoid the gyro torquing. In this paper, a space-stable inertial navigation system is developed, where an inertial, rather than geographic, reference is used for navigation calculations. The error model for the space-stable inertial navigation system is derived. Then an unscented Kalman filter is proposed to solve the nonlinear state estimation problem of the error model. Finally, the result shows that a good performance is achieved with a tractable computational load.

关键词： space-stable inertial navigation system Kalman filter unscented Kalman filter.

作者: Wu Qiuping Han Fengtian

作者单位: Department of Precision Instruments and Mechanology,Tsinghua University,Beijing,China,100084

会议类型: 国际会议

会议名称: 2011 10th International Conference on Electronic Measurement & Instruments(第十届电子测量与仪器国际会议 ICEMI2011)

会议地点: 成都

会议语种:英文

页码: 645-648

在线出版日期: 2011-08-16（万方平台首次上网日期，不代表论文的发表时间）