一种低成本微机电系统（MEMS）弹载复合旋转调制方案。

A Low-Cost MEMS Missile-Borne Compound Rotation Modulation Scheme.

作者信息

Yuan Xiaoqiao, Li Jie, Zhang Xi, Feng Kaiqiang, Wei Xiaokai, Zhang Debiao, Mi Jing

机构信息

National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, China.

School of Electrical Control Engineering, North University of China, Taiyuan 030051, China.

出版信息

Sensors (Basel). 2021 Jul 19;21(14):4910. doi: 10.3390/s21144910.

DOI:10.3390/s21144910

PMID:34300647

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8309829/

Abstract

Rotation modulation (RM) has been widely used in navigation systems to significantly improve the navigation accuracy of inertial navigation systems (INSs). However, the traditional single-axis rotation modulation cannot achieve the modulation of all the constant errors in the three directions; thus, it is not suitable for application in highly dynamic environments due to requirements for high precision in missiles. Aiming at the problems of error accumulation and divergence in the direction of rotation axis existing in the traditional single-axis rotation modulation, a novel rotation scheme is proposed. Firstly, the error propagation principle of the new rotation modulation scheme is analyzed. Secondly, the condition of realizing the error modulation with constant error is discussed. Finally, the original rotation modulation navigation algorithm is optimized for the new rotation modulation scheme. The experiment and simulation results show that the new rotation scheme can effectively modulate the error divergence of roll angle and improve the accuracy of roll angle by two orders of magnitude.

摘要

旋转调制（RM）已广泛应用于导航系统，以显著提高惯性导航系统（INS）的导航精度。然而，传统的单轴旋转调制无法实现对三个方向上所有常值误差的调制；因此，由于导弹对高精度的要求，它不适用于高动态环境。针对传统单轴旋转调制中存在的旋转轴方向误差积累和发散问题，提出了一种新颖的旋转方案。首先，分析了新旋转调制方案的误差传播原理。其次，讨论了用常值误差实现误差调制的条件。最后，针对新旋转调制方案对原旋转调制导航算法进行了优化。实验和仿真结果表明，新的旋转方案能够有效调制横滚角的误差发散，并将横滚角精度提高两个数量级。