基于联合平差的船台测量场标定方法研究

Research on the calibration method of slipway measurement field based on joint adjustment

针对船台测量场中由测量误差和算法误差所引起的公共点位置偏差,本文采用联合平差算法实现船台测量场的标定,该方法基于最小二乘原理和条件平差给出船台测量场公共点位置的误差方程和约束条件方程,并根据此方程得到满足船台测量场公共点位置误差最小的坐标转换参数求解方法。实验结果证明,该方法有效减少了利用多级转站方法构建船台测量场时的公共点位置误差。

Aiming at the common point error caused by measuring error and algorithm error in slipway measurement field, a joint adjustment calibration method of slipway measurement field is proposed. Based on the least squares principle and the conditional adjustment, the error equation and the constraint equation of the common point position are obtained. According to the equation, the coordinate transforming parameter solving method which satisfies the minimum position error of the common point in slipway measurement field is obtained. The experimental results show that the method effectively reduces the common point error of slipway measurement field constructed by multistage station transforming.