摘要
为解决舰载机惯导系统在大方位失准角条件下的快速传递对准问题,提出了一种新的线性化方法。通过舰船坐标系与舰载机标称坐标系之间的方向余弦矩阵,将舰船坐标系与舰载机实际坐标系之间的大方位失准角问题,转化为舰载机标称坐标系与舰载机实际坐标系之间的小方位失准角问题,建立了舰载机传递对准的线性化数学模型,采用"速度+姿态"匹配法对传递对准滤波器进行仿真。结果表明在20 s时间以内曲线即收敛,使得水平失准角误差和方位失准角误差在1′以内,满足了对准速度和精度的要求,克服了传统方法对准时间较长的缺点。
To solve the rapid transfer alignment problem of a carrier aircraft＇s inertial navigation system under large azimuth misalignment angles,a new method of linearization is put forward.This method transforms large azimuth misalignment angle problem between ship coordinate and aircraft real coordinate by direction cosine matrix,into small azimuth misalignment angle problem between aircraft nominal coordinate and aircraft real coordinate.This paper eslablishes a linear model of transfer alignment,and emulates the filter using velocity and attitude matching method.The result shows that within 10 seconds,the emulation curve reaches stabilized,makes level misalignment angle error below 3′ and azimuth angle error below 4′,satisfies the requirement of alignment speed and precision,and surmounts the shortcoming of long alignment time using traditional methods.
出处
《飞行力学》
CSCD
北大核心
2009年第2期63-66,71,共5页
Flight Dynamics
基金
总装备部"十一五"预研基金资助项目(51309060401)
关键词
舰载机
惯导系统
传递对准
速度和姿态
卡尔曼滤波器
carrier aircraft
inertial navigation system
transfer alignment
velocity and attitude
Kalman filter
