基于导航解的RTK工程测量坐标改正方法研究

The Coordinate Modification Method of RTK Engineering Survey Based on Navigation Coordinate

本文分析了工程测量中RTK基准站的导航解坐标与精密解坐标的差值量级，研究了基于导航解的RTK流动站坐标改正方法，得出了利用基准站的外业导航解与精密解的差值。对流动站坐标进行改正，其结果与基于精密解的RTK流动站坐标差值小于1cm，可以满足工程测量精度的要求。在没有己知点的地区，利用外业基于导航解的RTK工程测量，内业对其坐标加改正的方法，能有效地缩短外业等待时间，提高工作效率，节省外业成本。

In the area without the known coordinate station, survey based on RTK is not run because of the coordinate of reference is unknown. In this paper, the difference between the navigation coordinate and the precise coordinate of reference station is computed, and is used to modify the rover coordinate. The difference between the rover coordinate using this method and RTK is less than lcm, which can meet the requirements of engineering survey. Using this method, survey based on the navigation coordinate of the RTK reference station can be carried out, and the rover coordinate is modified in post processing for high precise coordinate. Therefore, survey time can be saved and the cost will be cut down.