机抖激光惯导圆锥误差补偿算法研究

随着陀螺技术的发展,激光惯导陀螺数据输出频率变高,常用圆锥误差补偿算法使得系统运算负荷较大且无法有效挖掘高频数据对圆锥误差的补偿潜力。针对上述问题,提出五子样二次迭代圆锥误差补偿算法,推导了五子样二次迭代优化算法公式,并与双回路二子样、三子样优化算法进行了对比计算。经研究表明,该算法在保证惯导数据更新频率的同时有效提高了圆锥误差补偿效果,且相对于目前常用算法,对系统造成的运算负荷较小。提高了激光惯导系统在圆锥运动等恶劣工作环境下的工作性能。

SINS Coning Compensation Algorithm Based on Mechanical Dithered Ring Laser Gyro

With the development of gyro technology, data update frequency of the laser gyro becomes high. The algorithms used commonly can not work well and computational burden is very high. In response to these issues, the five sample and two time iteration algorithm for SINS attitude updating is proposed. The comparison with two sample and three sample iter- ation algorithm drifts of double loop is made. The study shows that the algorithm can compensate for cone error better and computational burden is low. The algorithm can make LSlNS work well in coning motion condition.