随着导弹技术的发展 ,位置测量设备的精度要求也不断提高。介绍位置测量系统的现状 ,研制出一种新的非接触位置测量系统 ,推导出新的测量方法———三角法测量技术原理 ,对某型号地空导弹发射车与装填车之间X ,Y ,Z ,α的位置关系进行测量。通过三角知识及误差合成理论 ,分析出此系统的测量精度 ,长度 (X ,Y ,Z) :± 1mm ,角度 (α) :± 3′。 With the development of missile technology, the accuracy requirements of position measuring equipment are also constantly increasing. This paper introduces the status quo of position measuring system and develops a new non-contact position measuring system. The new measuring method --- trigonometrical measuring principle is deduced. The relationship between the X, Y , Z, α position of the relationship between the measurement. Through the knowledge of triangulation and error synthesis theory, the measurement accuracy and length (X, Y, Z) of the system are analyzed: ± 1mm, angle (α): ± 3 ’.