【摘要】 陀螺仪寻北的中天法一次测量需要一个完整的陀螺摆动周期,需时较长,已不能适应现代测量需要。在传统中天法的基础上,提出了3/4周期中天法,并给出了3/4周期中天法的原理和推导公式。完成了传统中天法与3/4周期中天法应用于JT15陀螺仪上的精度对比实验。实验表明:3/4周期中天法在基本保持中天法测量精度的情况下,可以有效地缩减中天法的寻北时间。说明了欠周期中天法寻北测量的可行性,从而为提高寻北效率找到了一条有效的途径。更多还原

【Abstract】 Traditional north-finding gyroscope system based on transit method needs a whole gyroscope swing period which can not meet the modern measuring need for its long working time.The principle of 3/4 period transit method is proposed based on the whole transit method,then the basic principle and deduced formula of 3/4 transit method are presented.The contrastive experiments are accomplished based on JT15 gyroscope using the traditional transit method and the novel transit method.The experiments results show that 3/4 period transit method can effectively shorten the time of north-finding in the case of maintaining the measuring accuracy of the whole transit method.All of these prove the feasibility of north-finding gyroscope system based on 3/4 period and a new way to improve the north-finding efficiency time is put forward.更多还原