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为了分析捷联惯性导航系统的误差特性,试验中往往利用另一精密惯性基准为其提供实时的标准解。由于安装捷联惯导系统的一体性支架存在着加工误差以及两套惯性导航系统之间存在着安装误差。因此,两套惯性导航系纯的测量坐标系难以完全重合,它们之间存在一个坐标转换矩阵。本文根据技术要求设计试验步骤,利用重力场环境标定它们之间的这一转换矩阵,从而建立标准解与捷联惯导系统测量结果的数据联系。
In order to analyze the error characteristics of strapdown inertial navigation system, it is often used in experiments to provide real-time standard solutions using another precision inertial reference. Due to the integration of the strapless inertial navigation system stent there is processing error and installation error between the two sets of inertial navigation system. Therefore, it is difficult for two inertial navigation systems to completely coincide with each other, and there is a coordinate transformation matrix between them. In this paper, we designed the test steps according to the technical requirements and calibrated the transformation matrix between them by using the gravity field environment to establish the data connection between the standard solution and SINS measurement results.