【摘要】 针对弹载大动态推力、爆炸冲击与高速飞行无姿态辅助的SINS/GPS组合系统初始对准问题，引入基于惯性系动态初始对准方法，剖析大动态场景下影响姿态角对准精度的主要因素，提出用大动态特征值实现对准开始时间与结束时间的自动辅助判断策略。试验与仿真结果表明，SVD和TRIAD两种算法都对大动态SINS/GPS组合自对准具有一定的适应性；大动态特征值决策辅助的SVD算法能提高过程机动下姿态角对准精度，较TRIAD算法和无动态特征值辅助下的SVD算法的动态适应能力更强、精度更高，尤其是在采用中低等精度的SINS空中动态下SINS/GPS组合自对准精度较地面静态或地面晃动下自对准精度高。更多还原

【Abstract】 Aiming at solving the problem of SIN/GPS self-alignment under high dynamic and high impact interference of booster and high speed flight conditions, some attitude alignment algorithm based on inertial frame were introduced firstly, then the main factors affecting attitude alignment precision were deducted, lastly a strategy using high dynamic features to assist SVD determining the starting and ending time of attitude alignment was proposed. Test and simulation results showed that SVD and TRIAD are available for high dynamic SIN/GPS alignment when long non-maneuverability existence, meanwhile high dynamic feature auxiliary SVD had better attitude alignment performance such as precision and adaptability for maneuverability flight process, and SINS/GPS self-alignment approach had better precision as flight than stationary base or sway base especially for middle and low precision SINS.更多还原