针对目前我国大部分研制生产的寻北仪忽略实际工作过程中转台倾斜时转位误差分析补偿问题,提出一种基于动调陀螺的二位置捷联式快速寻北仪。介绍二位置陀螺寻北仪的工作原理,在推导转台倾斜时方位角解算公式的基础上,重点分析转台倾斜时转位误差对寻北精度的影响,推导出误差公式及补偿方法,并用Matlab进行误差仿真实验。实验结果表明:转台倾斜角在±10°范围内时,转位误差引起的寻北误差随方位角的变化基本服从三角函数分布,且大小近似为转位误差的一半。
Aimed at the problem of the present most of development and production of the north seeker ignored practical work process of transposition turntable tilt error analysis in China, proposed the strapdown fast two-position north seeker based on the dynamically tuned gyro. Introduce two position gyro north seeker working principle, based on the derivation of turntable incline azimuth calculation formula, focusing on analysis of the influence of position error on north-seeking precision when turntable is inclined, and deduce the formula of error, finally using Matlab progress error simulation experiment. Experimental results show, platform tilt angle in the range of ± 10°, north seeking error caused by the position error variation with azimuth basically obey the triangle function distribution, and the size is approximately half the transposition error.