摘要
为进一步提高某型飞机捷联航姿系统的磁航向精度,分析了该系统中姿态角误差对磁航向精度的影响,详细推导了磁航向角的误差公式。结合某型飞机的特点,对误差公式做了进一步简化分析,结论表明磁航向角的误差大小主要由姿态角误差的平方和决定。采用试飞数据进行仿真,结果验证了误差公式及分析结论的正确性。
To improve the precision of magnetic heading of strapdown attitude heading reference system （SAHRS） of an airplane, the effect of attitude error on the magnetic heading precision was analyzed supposing there was no flux measurement error. The error equation of magnetic heading was derived, the error equation was simplified and analyzed considering that the pitch angle of the airplane is small. The analysis conclusion shows that the magnetic heading error is mainly determined by the square sum of attitude errors. The simulation was made using the data obtained in flight-test, which proved the correctness of the error equation and analysis result.
出处
《中国惯性技术学报》
EI
CSCD
2007年第6期650-652,共3页
Journal of Chinese Inertial Technology
基金
航天支撑技术基金项目(2006HT4208)
关键词
捷联航姿系统
磁航向
误差分析
姿态
strapdown attitude heading reference system
magnetic heading
error analysis
attitude
