It discusses the influence of ground control network, underground traverse survey, shaft orientation and gyroscopic orientation edge append-survey on breakthrough precision.
分析了地面控制网、井下导线测量、立井定向和加测陀螺定向边对贯通大型巷道精度的影响；讨论了提高测量精度的可行性方法。
Under the OSSS contract, Harris provided operations, maintenance and support services to the Air Force Satellite Control network and Global Positioning System ground networks.
根据这份OSSS合同，哈里斯公司为美国空军卫星控制网络和GPS地面网络提供了运行、维护和支持服务。
Spatial microgravity Ground test system Neural network control Sliding model control;
空间微重力；地面试验系统；神经网络控制； 滑膜控制；
By means of GPS dummy network reference station positioning system, the ground control points for the calibration of remote sensing image were surveyed with the precision of centimeter level.
利用GPS虚拟网络参考站定位系统，以厘米级精度测定校正遥感图像的地面控制点。
By means of GPS dummy network reference station positioning system, the ground control points for the calibration of remote sensing image were surveyed with the precision of centimeter level.
利用GPS虚拟网络参考站定位系统，以厘米级精度测定校正遥感图像的地面控制点。
应用推荐