矩阵抖动法及在火箭橇测试数据处理中的应用

Matrix-Dither Procedure for Test Data from Rocket Sled

环境函数矩阵分析法是一种在惯导系统误差模型研究中经常使用的测试数据处理方法,但在系统误差模型参数辨识过程中,环境函数矩阵的列亏秩将直接影响模型参数的辨识效果,为此国内外研究人员提出了许多数据处理方法。作者结合最小二乘估计法和岭估计法提出一种新的矩阵处理方法——矩阵抖动法。首先介绍矩阵抖动法的工作原理及实现步骤,然后介绍在火箭橇测试数据处理中的应用,结合火箭橇仿真测试数据验证矩阵抖动法处理效果,给出确定抖动幅度的经验公式。

The traditional mathematics technique is not suitable in the process of data from rocket sled test of INS, a new kind of matrix-dither procedure was advanced. The process and principium of the matrix-dither were introduced at first, and application on the process of the data form rocket sled test, a list of test data from simulation was followed to validate the matrix-dither, and at last, the principle to design the amplitude of the dither was proposed.