考虑时空基准差异的传递对准算法研究

Study on Transfer Alignment Algorithm Considering Space time Difference

关键词:  捷联惯导  传递对准  卡尔曼滤波  时空配准

Key words:  Strapdown inertial navigation system  Transfer alignment  Kalman filter  Space time alignment

摘要:

给出了一种考虑时空基准差异的传递对准算法。该方法在构造传递对准量测时，将剩余时空配准误差增广为状态向量，建立了包含不同步时间、杆臂向量在内的传递对准模型。计算机仿真结果表明，对时空配准剩余误差进行建模补偿能够改善传递对准的性能。在要求快速高精度对准的情况下，考虑主子惯导时空配准剩余误差是必要的。

Abstract:

A transfer alignment algorithm considering space time difference is proposed.The proposed method extends the residual space time alignment error to filtering states，a transfer alignment model considering time asynchronous error and level arm is designed.Simulation results demonstrate that the proposed algorithm improved the performance of the transfer alignment.In the fast and high accuracy alignment it is necessary to take into account of the residual space time alignment error.