3/4周期中天法的陀螺智能寻北  

3/4 period transit method in intelligent north-finding gyroscope system

作　　者：夏桂锁[1] 林明春[1] 林玉池[1] 黄银国[1] 崔彦平[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《传感器与微系统》2007年第9期53-55,58,共4页Transducer and Microsystem Technologies

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。Traditional north-finding gyroscope system based on transit method needs a whole gyroscope swing period which can not meet the modem 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.

关 键 词：陀螺经纬仪 寻北 中天法 3/4周期 

分 类 号：P227.9[天文地球—大地测量学与测量工程]