摘要
为了解决动基座条件下罗经回路方法误差较大的问题,通过捷联罗经的原理进行分析,使用梅森增益公式,对航行状态下罗经回路对准方法的误差进行了深入分析,采用"等效器件误差"的方法,将匀速状态下舰船的速度带来的影响等效成常值陀螺漂移和常值加速度计零偏,定量给出了纬度变化、匀速、条件下所引起的罗经回路对准方法的水平失准角和方位失准角稳态误差角的表达式,并通过了仿真验证,为将罗经回路对准法推广至动基座情况提供有力的支持。
In order to overcome the error problem associated with compass circuit in navigation state,based on the principle of strap-down inertial compass alignment,this study thoroughly analyzes the alignment error of compass circuit in navigation state using Mason's formula.In addition,using a method called 'equal sensor bias',the effect of ship speed under uniform speed is considered as an equivalent of gyroscope drift and accelerator bias.Furthermore,this study provides an expression of dynamic error of east circuit,north circuit and azimuth circuit caused by ship speed.This expression is validated by computer simulations.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2012年第1期46-49,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(60604019)
关键词
捷联罗经
罗经回路
罗经对准
信号流图
原理框图
航行状态
等效器件误差
误差分析
strap-down inertial compass
compass circuit
compass alignment
signal process
block diagram
dynamic environment
equal sensor bias
error analysis
