在安装过程中，他们发现该设备宽3米，而330巷宽只有4.8米，这样基础位置垂直于该巷道，面临90度转弯的难题。
During installation, they found the device and 3 meters wide, while only 4.8 meters wide, Lane 330, this basic position perpendicular to the roadway, facing 90-degree bend problem.
折射校正载波相位测量是由两组不同的基本频率宽巷载波相位测量组成。
Refraction correction carrier phase measurements is composition of two different sets of fundamental frequency wide-lane carrier phase measurement.
推导了三种载波相位观测量线性组合的模型：宽巷组合、窄巷组合和无电离层延迟的组合。
Three kinds of models of carrier phase observation value linear combination are deduced such as wide lane, narrow lane and free ionosphere.
应用推荐