摘要
现有工作空间测量定位系统发射站定向方法依赖辅助测量设备,容易产生操作失误,效率较低.利用发射站工作时水平安置的特点,通过引入距离约束结合空间角度测量模型,提出一种采用标准尺的发射站快速定向方法.建立了基于光平面方程描述的发射站数学模型,推导了角度测量公式及坐标测量方程,并在此基础上建立了基于几何约束的平差模型,给出了优化解算方法.实验表明,采用该方法完成双站系统定向后,标准尺长度的解算误差小于0.25mm,在保证定向精度的前提下使测量效率得到显著提高.
The present transmitter orientation method in workspace measurement positioning system relies on auxiliary measurement equipment,which is more error-prone and less efficient.Utilizing the feature of transmitters being equipped horizontally at working,a rapid transmitter orientation method based on scale bar was proposed by involving distance constraint and spatial angle measurement model.The mathematical model of transmitter,based on optical plane equation was established.The angle measurement formula and the coordinate measurement equations were derived.On this basis,the adjustment model based on the geometric constraint was performed,and calculation method for optimization was also given.The experimental results demonstrate that after an orientation process of dualstation system,calculation error of scale bar length is less than 0.25mm,and the measurement efficiency is significantly increased while ensuring orientation accuracy.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2012年第9期814-819,共6页
Journal of Tianjin University(Science and Technology)
基金
国家自然科学基金重点资助项目(50735003)
天津市科技支撑资助项目(08ZCGYGX11800)
天津市应用基础及前沿技术研究计划资助项目(09JCZDJC26700)
中国博士后科学基金资助项目(20110490273)
关键词
标准尺
大尺寸坐标测量
多平面交汇测量
平差
scale bar
large-scale coordinate measurement
multi-plane intersection measurement
adjustment
