针对测量船传统实时水平测量方法精度较低(≥100″)的问题，引入了基于光学测量手段的动态实时船体水平姿态测量方法。采用“光学编码精密测角＋惯性同步复示平台＋水平误差检测工具”的设计模式，保证了跟踪的稳定性，提高了测量精度。实验结果表明：提出的方法可以提供比传统惯导系统更稳定、精度更高(纵摇537″,横摇360″)的船体水平姿态数据；可以作为一种普遍适用的运动载体精密水平测量监测手段，为运动载体实时提供高精度的水平基准信息，或用于运动载体惯导水平精度鉴定等。

In order to solve the problem of low accuracy(≥ 10 arcsec) in traditional real-time horizontal measurement methods, this paper introduces a new real time measurement method for the dynamic attitudes of a survey ship based on optical measurement. The model of “precise optical angle encoder measurement+inertia synchronous duplex platform+horizontal attitude error detection tool” is designed to ensure the tracking stability and to improve the measurement accuracy. Experimental results show that this method can provide more stable attitude data of the survey ship with greater precision(pitch:537 arcsec, rolling:360 arcsec) than those of the traditional Inertial Navigation System(INS). As a universal standard of precise measurement for moving carriers, this design can provide accurate real-time level of baseline information, or the accuracy level for INS accreditation of moving carriers.