两种捷联惯导系统自对准方法的比较研究

在用调平方法实现水平姿态角的对准过程中，通过不同的参数设计可实现不同阶段的对准功能。方位对准采用可平滑噪声的方位误差估算法，通过计算机仿真和实际系统实验表明此方法有较高的对准精度，对准时间为十几分钟。若在精对准时采用卡尔曼滤波方法，可在相对较短的时间内完成初始对准，仿真结果验证了这种方法的有效性。

Comparative Research on Two Alignment Methods for SINS

In the horizontal alignment by leveling method, the alignments of different stages are realized by different designs of parameters. Azimuth alignment is realized by estimating the azimuth misalignment angle which can smooth the measurement noise. Computer simulation results and the experiments on actual system indicate that this method has higher alignment accuracy, but it takes about 15 minutes. If using Kalman filter in a fine alignment, the time that the alignment takes can be reduced. Simulation results validate the efficiency of this method.