摄影/惯导组合定位技术在GNSS动态定位性能测试中的应用

在分析现有GNSS动态定位精度评估方法不足的基础上,提出区别于传统组合导航滤波算法的摄影/惯导组合定位技术。将多个摄影节点的位置观测量作为基准,利用最小二乘最优估计法统一解算捷联惯导误差参数。摄影/惯导组合定位方法的基本观测量、工作模式与卫星导航定位方法有本质区别;同时又具备高精度定位、高动态定位、高数据刷新率和差异数据观测量4个条件,十分适合作为GNSS动态定位性能测试的评估技术。通过在标志场内进行的摄影测量试验和摄影/惯导组合定位性能仿真试验,验证了摄影/惯导组合定位方法的可行性。该方法为首次提出,具有一定的科学价值。

Photography/SINS Integrated Positioning Technology Used in the Evaluation of GNSS Dynamic Positioning Test

This paper pointed out the shortcomings of the dynamic positioning accuracy evaluation methods. A new combined method which named as photography / SINS integrated positioning technology with control nodes was in-troduced into the GNSS dynamic positioning accuracy test. The SINS error parameters can be calculated using the optimal estimate method. The method has essential difference with GNSS positioning method in principle. The basic concepts of measurement are different. The method can achieve high positioning accuracy with high data rate in high dynamic conditions. The technology is very suitable for the evaluation of GNSS dynamic positioning test. Pho-tography test and photography/SINS integrated positioning test were held. The results proved that photography/SINS integrated positioning method can get a good positioning accuracy. The photography / SINS integrated positio-ning method is innovative and scientific.