基于三阶锁相环的旋转弹滚转姿态测量方法

摘要

An analysis of spin⁃stabilized projectile angular motion characteristics was performed to determine the roll attitude of a spin⁃stabilized projectile using a low⁃range gyroscope. A mathematical model was established, and a method of determining the roll attitude of the spin⁃stabilized projectile using a low⁃range gyroscope was proposed based on third⁃order phase⁃locking loops. A loop filter parameter of the third⁃order phase⁃locking loops was calculat⁃ed using the characteristics of the spin⁃stabilized projectile coupled with an angular motion signal and measured sig⁃nal of the low⁃range gyroscope. Moreover, the roll angle and angular roll rate can be calculated using the proposed methodology. Experimental results show that the proposed method can effectively lock the angular roll motion signal of the spin⁃stabilized projectile and calculate the roll attitude of that spin projectile with a high degree of accuracy.%为解决低量程陀螺测量旋转弹滚转姿态的问题，在对旋转弹角运动特性进行分析研究的基础上，建立低量程陀螺测量滚转姿态的数学模型，提出基于三阶锁相环和低量程陀螺的旋转弹滚转姿态测量方法。先对三阶锁相环及其特性进行研究，再根据旋转弹角运动特性和低量程陀螺测量信号特性确定三阶锁相环环路滤波参数，并确定基于三阶锁相环和低量程陀螺的旋转弹滚转姿态测量模型，即可根据模型进行锁相跟踪计算得到滚转角速度和滚转姿态。实验结果表明，三阶锁相跟踪环路能对旋转弹滚转信号进行有效跟踪，能够获取滚转角速度和滚转角，且精度较高。