摘要
提出了基于全站仪的两点测角测距—航向测量模型,设计并实现了基于该模型的高精度动态航向初始标校系统。根据航向测量模型,对观测误差进行了分析,分析了动态误差形成的原因,建立了误差模型,并设计了动态精度试验。试验结果表明,在动态条件下,系统达到了≤30″的测量精度,满足对包括高精度GPS姿态测量系统、平台罗经在内的高精度导航设备进行初始标校的精度要求。
A two-pointed-angle-distance survey heading measurement modeling is presented, which is based on two total stations. And then a dynamic high-accuracy initial alignment calibration system based on this modeling is discussed. According to this modeling, the static error brought about by observation errors of total stations is completely analyzed and the static error model is built. Based on the theory of heading measurement, the analysis of dynamic error is discussed. Then according to the motion of carrier, the dynamic error model is also built. Finally a dynamic measuring experiment is designed and carried out. The results of the experiment show that the dynamic heading metering accuracy is lower than 30″and this accuracy satisfies the calibration requirement of modern navigation devices.
出处
《计算机测量与控制》
CSCD
2005年第6期587-589,597,共4页
Computer Measurement &Control
基金
国家自然科学基金资助项目(40376011)
国家杰出青年科学基金资助项目(40125013)。
