惯导平台陀螺安装误差角辨识的制约因素分析及对策

Accuracy Limitating Factor Analysis and Strategy of the Inertial Platform Gyro Misalignment Angle Identification

在惯导平台多位置静态测漂方案下 ,对陀螺安装误差角的辨识结果往往很不理想。本文通过分析陀螺误差角影响惯导平台漂移的机理 ,发现平台壳体的角速率是制约误差角辨识精度的主要因素。由此 ,在测漂过程中有针对性地引入了转台相对地面的角 ,速率。仿真结果显示 。

The identification result of the gyro misalignment angle in inertial platform is unsatisfactory for the static multiposition test scheme.Analysis is made in this paper about the mechanism by which the gyro misalignment affect the platform drift,and it is found that the angular rate of the platform case is the main factor that affect the identification accuracy of misalignment angle.In consideration of this,the turningtable angular rate with respect to the ground is introduced in the test procedure.Simulation result proves the efficacy of the introduction.